102100010120 has 32 divisors (see below), whose sum is σ = 235067469120. Its totient is φ = 39890235840.

The previous prime is 102100010119. The next prime is 102100010123. The reversal of 102100010120 is 21010001201.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a junction number, because it is equal to n+sod(n) for n = 102100010098 and 102100010107.

It is not an unprimeable number, because it can be changed into a prime (102100010123) 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, 29678516 + ... + 29681955.

It is an arithmetic number, because the mean of its divisors is an integer number (7345858410).

Almost surely, 2^102100010120 is an apocalyptic number.

102100010120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102100010120 is an abundant number, since it is smaller than the sum of its proper divisors (132967459000).

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

102100010120 is a wasteful number, since it uses less digits than its factorization.

102100010120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59360525 (or 59360521 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 102100010120 its reverse (21010001201), we get a palindrome (123110011321).

The spelling of 102100010120 in words is "one hundred two billion, one hundred million, ten thousand, one hundred twenty".