222116157 has 6 divisors (see below), whose sum is σ = 320834462. Its totient is φ = 148077432.

The previous prime is 222116131. The next prime is 222116159. The reversal of 222116157 is 751611222.

222116157 is a `hidden beast` number, since 22 + 21 + 1 + 615 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 176066361 + 46049796 = 13269^2 + 6786^2 .

It is not a de Polignac number, because 222116157 - 2⁶ = 222116093 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222116157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222116159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12339778 + ... + 12339795.

Almost surely, 2^222116157 is an apocalyptic number.

It is an amenable number.

222116157 is a deficient number, since it is larger than the sum of its proper divisors (98718305).

222116157 is a wasteful number, since it uses less digits than its factorization.

222116157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24679579 (or 24679576 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 222116157 is about 14903.5618896960. The cubic root of 222116157 is about 605.6104822918.

Adding to 222116157 its reverse (751611222), we get a palindrome (973727379).

The spelling of 222116157 in words is "two hundred twenty-two million, one hundred sixteen thousand, one hundred fifty-seven".