22211992 has 16 divisors (see below), whose sum is σ = 45433800. Its totient is φ = 10096320.

The previous prime is 22211983. The next prime is 22211993. The reversal of 22211992 is 29911222.

It is a self number, because there is not a number n which added to its sum of digits gives 22211992.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22211993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126117 + ... + 126292.

Almost surely, 2^22211992 is an apocalyptic number.

22211992 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22211992 is an abundant number, since it is smaller than the sum of its proper divisors (23221808).

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

22211992 is a wasteful number, since it uses less digits than its factorization.

22211992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252426 (or 252422 counting only the distinct ones).

The product of its digits is 1296, while the sum is 28.

The square root of 22211992 is about 4712.9600040739. The cubic root of 22211992 is about 281.1010726272.

The spelling of 22211992 in words is "twenty-two million, two hundred eleven thousand, nine hundred ninety-two".