22431022 has 4 divisors (see below), whose sum is σ = 33646536. Its totient is φ = 11215510.

The previous prime is 22430987. The next prime is 22431047. The reversal of 22431022 is 22013422.

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

It is a junction number, because it is equal to n+sod(n) for n = 22430987 and 22431005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5607754 + ... + 5607757.

It is an arithmetic number, because the mean of its divisors is an integer number (8411634).

Almost surely, 2^22431022 is an apocalyptic number.

22431022 is a deficient number, since it is larger than the sum of its proper divisors (11215514).

22431022 is a wasteful number, since it uses less digits than its factorization.

22431022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11215513.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 22431022 is about 4736.1399894851. The cubic root of 22431022 is about 282.0220209821.

Adding to 22431022 its reverse (22013422), we get a palindrome (44444444).

The spelling of 22431022 in words is "twenty-two million, four hundred thirty-one thousand, twenty-two".