21112211212192 has 24 divisors (see below), whose sum is σ = 43752279816000. Its totient is φ = 10000521100224.

The previous prime is 21112211212187. The next prime is 21112211212231. The reversal of 21112211212192 is 29121211221112.

It is a self number, because there is not a number n which added to its sum of digits gives 21112211212192.

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, 17362015192 + ... + 17362016407.

It is an arithmetic number, because the mean of its divisors is an integer number (1823011659000).

Almost surely, 2^{21112211212192} is an apocalyptic number.

It is an amenable number.

21112211212192 is an abundant number, since it is smaller than the sum of its proper divisors (22640068603808).

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

21112211212192 is a wasteful number, since it uses less digits than its factorization.

21112211212192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34724031628 (or 34724031620 counting only the distinct ones).

The product of its digits is 576, while the sum is 28.

The spelling of 21112211212192 in words is "twenty-one trillion, one hundred twelve billion, two hundred eleven million, two hundred twelve thousand, one hundred ninety-two".