21200102111212 has 48 divisors (see below), whose sum is σ = 38881558517760. Its totient is φ = 10102443120000.

The previous prime is 21200102111137. The next prime is 21200102111239. The reversal of 21200102111212 is 21211120100212.

It is a super-2 number, since 2×21200102111212² (a number of 27 digits) contains 22 as substring.

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, 1056648 + ... + 6596719.

It is an arithmetic number, because the mean of its divisors is an integer number (810032469120).

Almost surely, 2^{21200102111212} is an apocalyptic number.

It is an amenable number.

21200102111212 is a deficient number, since it is larger than the sum of its proper divisors (17681456406548).

21200102111212 is a wasteful number, since it uses less digits than its factorization.

21200102111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7653742 (or 7653740 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21200102111212 its reverse (21211120100212), we get a palindrome (42411222211424).

The spelling of 21200102111212 in words is "twenty-one trillion, two hundred billion, one hundred two million, one hundred eleven thousand, two hundred twelve".