2221315136 has 14 divisors (see below), whose sum is σ = 4407922350. Its totient is φ = 1110657536.

The previous prime is 2221315121. The next prime is 2221315141. The reversal of 2221315136 is 6315131222.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2197734400 + 23580736 = 46880^2 + 4856^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17353961 + ... + 17354088.

Almost surely, 2^2221315136 is an apocalyptic number.

It is an amenable number.

2221315136 is a deficient number, since it is larger than the sum of its proper divisors (2186607214).

2221315136 is an equidigital number, since it uses as much as digits as its factorization.

2221315136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34708061 (or 34708051 counting only the distinct ones).

The product of its digits is 2160, while the sum is 26.

The square root of 2221315136 is about 47130.8299948134. The cubic root of 2221315136 is about 1304.7783001004.

Adding to 2221315136 its reverse (6315131222), we get a palindrome (8536446358).

The spelling of 2221315136 in words is "two billion, two hundred twenty-one million, three hundred fifteen thousand, one hundred thirty-six".