21010102021112 has 16 divisors (see below), whose sum is σ = 39455207148840. Its totient is φ = 10488713448096.

The previous prime is 21010102021093. The next prime is 21010102021127. The reversal of 21010102021112 is 21112020101012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2042189843 + ... + 2042200130.

Almost surely, 2^{21010102021112} is an apocalyptic number.

It is an amenable number.

21010102021112 is a deficient number, since it is larger than the sum of its proper divisors (18445105127728).

21010102021112 is a wasteful number, since it uses less digits than its factorization.

21010102021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4084390622 (or 4084390618 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21010102021112 its reverse (21112020101012), we get a palindrome (42122122122124).

The spelling of 21010102021112 in words is "twenty-one trillion, ten billion, one hundred two million, twenty-one thousand, one hundred twelve".