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1212210101100 = 223525376239629
BaseRepresentation
bin10001101000111101010…
…110100011101101101100
311021212221000011111212010
4101220331112203231230
5124330101241213400
62324514233241220
7153402460564305
oct21507526435554
94255830144763
101212210101100
11428105aaa839
12176b26863210
138a4071323bb
1442957dd77ac
15217ebb0d450
hex11a3d5a3b6c

1212210101100 has 72 divisors (see below), whose sum is σ = 3573503937360. Its totient is φ = 317156852480.

The previous prime is 1212210101093. The next prime is 1212210101111. The reversal of 1212210101100 is 11010122121.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38103915 + ... + 38135714.

It is an arithmetic number, because the mean of its divisors is an integer number (49631999130).

Almost surely, 21212210101100 is an apocalyptic number.

1212210101100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212210101100 is an abundant number, since it is smaller than the sum of its proper divisors (2361293836260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212210101100 is a wasteful number, since it uses less digits than its factorization.

1212210101100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76239699 (or 76239692 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1212210101100 its reverse (11010122121), we get a palindrome (1223220223221).

The spelling of 1212210101100 in words is "one trillion, two hundred twelve billion, two hundred ten million, one hundred one thousand, one hundred".

Divisors: 1 2 3 4 5 6 10 12 15 20 25 30 50 53 60 75 100 106 150 159 212 265 300 318 530 636 795 1060 1325 1590 2650 3180 3975 5300 7950 15900 76239629 152479258 228718887 304958516 381198145 457437774 762396290 914875548 1143594435 1524792580 1905990725 2287188870 3811981450 4040700337 4574377740 5717972175 7623962900 8081400674 11435944350 12122101011 16162801348 20203501685 22871888700 24244202022 40407003370 48488404044 60610505055 80814006740 101017508425 121221010110 202035016850 242442020220 303052525275 404070033700 606105050550 1212210101100