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1201122212120 = 23535598437217
BaseRepresentation
bin10001011110101000011…
…101100111100100011000
311020211022021100101121022
4101132220131213210120
5124134344241241440
62315442105302012
7152530633230335
oct21365035474430
94224267311538
101201122212120
114234361a2726
12174951494908
138935ac4494c
14421c55a998c
152139d4accb5
hex117a8767918

1201122212120 has 32 divisors (see below), whose sum is σ = 2703284647200. Its totient is φ = 480313832448.

The previous prime is 1201122212071. The next prime is 1201122212123. The reversal of 1201122212120 is 212122211021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201122212123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4076249 + ... + 4360968.

It is an arithmetic number, because the mean of its divisors is an integer number (84477645225).

Almost surely, 21201122212120 is an apocalyptic number.

1201122212120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201122212120 is an abundant number, since it is smaller than the sum of its proper divisors (1502162435080).

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

1201122212120 is a wasteful number, since it uses less digits than its factorization.

1201122212120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8440787 (or 8440783 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1201122212120 its reverse (212122211021), we get a palindrome (1413244423141).

The spelling of 1201122212120 in words is "one trillion, two hundred one billion, one hundred twenty-two million, two hundred twelve thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 3559 7118 14236 17795 28472 35590 71180 142360 8437217 16874434 33748868 42186085 67497736 84372170 168744340 337488680 30028055303 60056110606 120112221212 150140276515 240224442424 300280553030 600561106060 1201122212120