22121492 has 24 divisors (see below), whose sum is σ = 40896576. Its totient is φ = 10448768.

The previous prime is 22121483. The next prime is 22121503. The reversal of 22121492 is 29412122.

It is a Harshad number since it is a multiple of its sum of digits (23).

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, 6188 + ... + 9084.

It is an arithmetic number, because the mean of its divisors is an integer number (1704024).

Almost surely, 2^22121492 is an apocalyptic number.

It is an amenable number.

22121492 is a deficient number, since it is larger than the sum of its proper divisors (18775084).

22121492 is a wasteful number, since it uses less digits than its factorization.

22121492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3007 (or 3005 counting only the distinct ones).

The product of its digits is 576, while the sum is 23.

The square root of 22121492 is about 4703.3490195817. The cubic root of 22121492 is about 280.7187825004.

The spelling of 22121492 in words is "twenty-two million, one hundred twenty-one thousand, four hundred ninety-two".