21020210101112 has 64 divisors (see below), whose sum is σ = 39722895072000. Its totient is φ = 10427762188800.

The previous prime is 21020210101109. The next prime is 21020210101123. The reversal of 21020210101112 is 21110101202012.

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, 1562717987 + ... + 1562731437.

It is an arithmetic number, because the mean of its divisors is an integer number (620670235500).

Almost surely, 2^{21020210101112} is an apocalyptic number.

It is an amenable number.

21020210101112 is a deficient number, since it is larger than the sum of its proper divisors (18702684970888).

21020210101112 is a wasteful number, since it uses less digits than its factorization.

21020210101112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16356 (or 16352 counting only the distinct ones).

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

Adding to 21020210101112 its reverse (21110101202012), we get a palindrome (42130311303124).

The spelling of 21020210101112 in words is "twenty-one trillion, twenty billion, two hundred ten million, one hundred one thousand, one hundred twelve".