102010021012 has 12 divisors (see below), whose sum is σ = 178814575156. Its totient is φ = 50920142400.

The previous prime is 102010020991. The next prime is 102010021019. The reversal of 102010021012 is 210120010201.

It can be written as a sum of positive squares in 2 ways, for example, as 38054645776 + 63955375236 = 195076^2 + 252894^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 102010021012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102010021019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21214323 + ... + 21219130.

Almost surely, 2^102010021012 is an apocalyptic number.

It is an amenable number.

102010021012 is a deficient number, since it is larger than the sum of its proper divisors (76804554144).

102010021012 is a wasteful number, since it uses less digits than its factorization.

102010021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42434058 (or 42434056 counting only the distinct ones).

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

Adding to 102010021012 its reverse (210120010201), we get a palindrome (312130031213).

The spelling of 102010021012 in words is "one hundred two billion, ten million, twenty-one thousand, twelve".