222101636 has 12 divisors (see below), whose sum is σ = 393045660. Its totient is φ = 109802880.

The previous prime is 222101629. The next prime is 222101653. The reversal of 222101636 is 636101222.

It can be written as a sum of positive squares in 2 ways, for example, as 48916036 + 173185600 = 6994^2 + 13160^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 311585 + ... + 312296.

It is an arithmetic number, because the mean of its divisors is an integer number (32753805).

Almost surely, 2^222101636 is an apocalyptic number.

It is an amenable number.

222101636 is a deficient number, since it is larger than the sum of its proper divisors (170944024).

222101636 is a wasteful number, since it uses less digits than its factorization.

222101636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623974 (or 623972 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 222101636 is about 14903.0747163127. The cubic root of 222101636 is about 605.5972846005.

Adding to 222101636 its reverse (636101222), we get a palindrome (858202858).

The spelling of 222101636 in words is "two hundred twenty-two million, one hundred one thousand, six hundred thirty-six".