22121044 has 48 divisors (see below), whose sum is σ = 43860096. Its totient is φ = 9676800.

The previous prime is 22121041. The next prime is 22121051. The reversal of 22121044 is 44012122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 228004 + ... + 228100.

It is an arithmetic number, because the mean of its divisors is an integer number (913752).

Almost surely, 2^22121044 is an apocalyptic number.

It is an amenable number.

22121044 is a deficient number, since it is larger than the sum of its proper divisors (21739052).

22121044 is a wasteful number, since it uses less digits than its factorization.

22121044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 22121044 is about 4703.3013937021. The cubic root of 22121044 is about 280.7168874675.

Adding to 22121044 its reverse (44012122), we get a palindrome (66133166).

The spelling of 22121044 in words is "twenty-two million, one hundred twenty-one thousand, forty-four".