22531022 has 4 divisors (see below), whose sum is σ = 33796536. Its totient is φ = 11265510.

The previous prime is 22531009. The next prime is 22531049. The reversal of 22531022 is 22013522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22013522 = 2 ⋅11006761.

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, 5632754 + ... + 5632757.

It is an arithmetic number, because the mean of its divisors is an integer number (8449134).

Almost surely, 2^22531022 is an apocalyptic number.

22531022 is a deficient number, since it is larger than the sum of its proper divisors (11265514).

22531022 is a wasteful number, since it uses less digits than its factorization.

22531022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11265513.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 22531022 is about 4746.6853698133. The cubic root of 22531022 is about 282.4404949459.

Adding to 22531022 its reverse (22013522), we get a palindrome (44544544).

The spelling of 22531022 in words is "twenty-two million, five hundred thirty-one thousand, twenty-two".