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102122002220 = 2257729442873
BaseRepresentation
bin101111100011011110…
…0100001011100101100
3100202121001120020001112
41133012330201130230
53133121213032340
6114525244531152
710243451460620
oct1370674413454
9322531506045
10102122002220
113a345231847
1217960550ab8
139826332164
144d2abd7180
1529ca69b065
hex17c6f2172c

102122002220 has 24 divisors (see below), whose sum is σ = 245092805664. Its totient is φ = 35013257856.

The previous prime is 102122002211. The next prime is 102122002231. The reversal of 102122002220 is 22200221201.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 102122002195 and 102122002204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 364721297 + ... + 364721576.

It is an arithmetic number, because the mean of its divisors is an integer number (10212200236).

Almost surely, 2102122002220 is an apocalyptic number.

102122002220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102122002220 is an abundant number, since it is smaller than the sum of its proper divisors (142970803444).

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

102122002220 is a wasteful number, since it uses less digits than its factorization.

102122002220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729442889 (or 729442887 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 102122002220 its reverse (22200221201), we get a palindrome (124322223421).

The spelling of 102122002220 in words is "one hundred two billion, one hundred twenty-two million, two thousand, two hundred twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 729442873 1458885746 2917771492 3647214365 5106100111 7294428730 10212200222 14588857460 20424400444 25530500555 51061001110 102122002220