22122010 has 16 divisors (see below), whose sum is σ = 40174056. Its totient is φ = 8770048.

The previous prime is 22121987. The next prime is 22122011. The reversal of 22122010 is 1022122.

It can be written as a sum of positive squares in 4 ways, for example, as 16818201 + 5303809 = 4101^2 + 2303^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (22122011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8659 + ... + 10918.

Almost surely, 2^22122010 is an apocalyptic number.

22122010 is a deficient number, since it is larger than the sum of its proper divisors (18052046).

22122010 is a wasteful number, since it uses less digits than its factorization.

22122010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19697.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 22122010 is about 4703.4040864038. The cubic root of 22122010 is about 280.7209736002.

Adding to 22122010 its reverse (1022122), we get a palindrome (23144132).

The spelling of 22122010 in words is "twenty-two million, one hundred twenty-two thousand, ten".