21000211202112 has 28 divisors (see below), whose sum is σ = 55563058806096. Its totient is φ = 7000070400640.

The previous prime is 21000211202063. The next prime is 21000211202171. The reversal of 21000211202112 is 21120211200012.

It is a super-2 number, since 2×21000211202112² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21000211202091 and 21000211202100.

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, 54688049814 + ... + 54688050197.

Almost surely, 2^{21000211202112} is an apocalyptic number.

It is an amenable number.

21000211202112 is an abundant number, since it is smaller than the sum of its proper divisors (34562847603984).

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

21000211202112 is a wasteful number, since it uses less digits than its factorization.

21000211202112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109376100026 (or 109376100016 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21000211202112 its reverse (21120211200012), we get a palindrome (42120422402124).

The spelling of 21000211202112 in words is "twenty-one trillion, two hundred eleven million, two hundred two thousand, one hundred twelve".