22129922 has 8 divisors (see below), whose sum is σ = 34092156. Its totient is φ = 10765872.

The previous prime is 22129901. The next prime is 22129931. The reversal of 22129922 is 22992122.

It can be written as a sum of positive squares in 2 ways, for example, as 19971961 + 2157961 = 4469^2 + 1469^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149453 + ... + 149600.

Almost surely, 2^22129922 is an apocalyptic number.

22129922 is a deficient number, since it is larger than the sum of its proper divisors (11962234).

22129922 is a wasteful number, since it uses less digits than its factorization.

22129922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299092.

The product of its digits is 2592, while the sum is 29.

The square root of 22129922 is about 4704.2451041586. The cubic root of 22129922 is about 280.7544364969.

The spelling of 22129922 in words is "twenty-two million, one hundred twenty-nine thousand, nine hundred twenty-two".