22211690 has 16 divisors (see below), whose sum is σ = 42333192. Its totient is φ = 8361984.

The previous prime is 22211687. The next prime is 22211701. The reversal of 22211690 is 9611222.

It can be written as a sum of positive squares in 4 ways, for example, as 21003889 + 1207801 = 4583^2 + 1099^2 .

It is a super-2 number, since 2×22211690² = 986718345312200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65159 + ... + 65498.

Almost surely, 2^22211690 is an apocalyptic number.

22211690 is a deficient number, since it is larger than the sum of its proper divisors (20121502).

22211690 is a wasteful number, since it uses less digits than its factorization.

22211690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130681.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 22211690 is about 4712.9279646521. The cubic root of 22211690 is about 281.0997986471.

The spelling of 22211690 in words is "twenty-two million, two hundred eleven thousand, six hundred ninety".