22121942 has 4 divisors (see below), whose sum is σ = 33182916. Its totient is φ = 11060970.

The previous prime is 22121933. The next prime is 22121951. The reversal of 22121942 is 24912122.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (22121933) and next prime (22121951).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5530484 + ... + 5530487.

It is an arithmetic number, because the mean of its divisors is an integer number (8295729).

Almost surely, 2^22121942 is an apocalyptic number.

22121942 is a deficient number, since it is larger than the sum of its proper divisors (11060974).

22121942 is a wasteful number, since it uses less digits than its factorization.

22121942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11060973.

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

The square root of 22121942 is about 4703.3968575913. The cubic root of 22121942 is about 280.7206859674.

The spelling of 22121942 in words is "twenty-two million, one hundred twenty-one thousand, nine hundred forty-two".