10102021012 has 6 divisors (see below), whose sum is σ = 17678536778. Its totient is φ = 5051010504.

The previous prime is 10102021009. The next prime is 10102021043. The reversal of 10102021012 is 21012020101.

It can be written as a sum of positive squares in only one way, i.e., 7982707716 + 2119313296 = 89346^2 + 46036^2 .

It is a super-3 number, since 3×10102021012³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10102021012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1262752623 + ... + 1262752630.

Almost surely, 2^10102021012 is an apocalyptic number.

It is an amenable number.

10102021012 is a deficient number, since it is larger than the sum of its proper divisors (7576515766).

10102021012 is a wasteful number, since it uses less digits than its factorization.

10102021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2525505257 (or 2525505255 counting only the distinct ones).

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

Adding to 10102021012 its reverse (21012020101), we get a palindrome (31114041113).

The spelling of 10102021012 in words is "ten billion, one hundred two million, twenty-one thousand, twelve".