22151210 has 16 divisors (see below), whose sum is σ = 40321800. Its totient is φ = 8760576.

The previous prime is 22151209. The next prime is 22151249. The reversal of 22151210 is 1215122.

It can be written as a sum of positive squares in 4 ways, for example, as 6651241 + 15499969 = 2579^2 + 3937^2 .

It is a super-2 number, since 2×22151210² = 981352208928200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11555 + ... + 13334.

Almost surely, 2^22151210 is an apocalyptic number.

22151210 is a deficient number, since it is larger than the sum of its proper divisors (18170590).

22151210 is a wasteful number, since it uses less digits than its factorization.

22151210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24985.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 22151210 is about 4706.5071974873. The cubic root of 22151210 is about 280.8444320698.

Adding to 22151210 its reverse (1215122), we get a palindrome (23366332).

The spelling of 22151210 in words is "twenty-two million, one hundred fifty-one thousand, two hundred ten".