21222033112 has 32 divisors (see below), whose sum is σ = 45488109600. Its totient is φ = 9092692224.

The previous prime is 21222033101. The next prime is 21222033127. The reversal of 21222033112 is 21133022212.

It is a self number, because there is not a number n which added to its sum of digits gives 21222033112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165214 + ... + 264082.

It is an arithmetic number, because the mean of its divisors is an integer number (1421503425).

Almost surely, 2^21222033112 is an apocalyptic number.

It is an amenable number.

21222033112 is an abundant number, since it is smaller than the sum of its proper divisors (24266076488).

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

21222033112 is a wasteful number, since it uses less digits than its factorization.

21222033112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102715 (or 102711 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21222033112 its reverse (21133022212), we get a palindrome (42355055324).

The spelling of 21222033112 in words is "twenty-one billion, two hundred twenty-two million, thirty-three thousand, one hundred twelve".