102100000021012 has 48 divisors (see below), whose sum is σ = 205342424340480. Its totient is φ = 43512501312000.

The previous prime is 102100000020983. The next prime is 102100000021079. The reversal of 102100000021012 is 210120000001201.

It is a self number, because there is not a number n which added to its sum of digits gives 102100000021012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11571814 + ... + 18387682.

It is an arithmetic number, because the mean of its divisors is an integer number (4277967173760).

Almost surely, 2^{102100000021012} is an apocalyptic number.

It is an amenable number.

102100000021012 is an abundant number, since it is smaller than the sum of its proper divisors (103242424319468).

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

102100000021012 is a wasteful number, since it uses less digits than its factorization.

102100000021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6818872 (or 6818870 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 102100000021012 its reverse (210120000001201), we get a palindrome (312220000022213).

The spelling of 102100000021012 in words is "one hundred two trillion, one hundred billion, twenty-one thousand, twelve".