222156238015 has 16 divisors (see below), whose sum is σ = 270746058240. Its totient is φ = 174971796480.

The previous prime is 222156237971. The next prime is 222156238019. The reversal of 222156238015 is 510832651222.

It is not a de Polignac number, because 222156238015 - 2¹¹ = 222156235967 is a prime.

It is a super-2 number, since 2×222156238015² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222156238019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1106460 + ... + 1291729.

It is an arithmetic number, because the mean of its divisors is an integer number (16921628640).

Almost surely, 2^222156238015 is an apocalyptic number.

222156238015 is a deficient number, since it is larger than the sum of its proper divisors (48589820225).

222156238015 is a wasteful number, since it uses less digits than its factorization.

222156238015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2398482.

The product of its (nonzero) digits is 57600, while the sum is 37.

Adding to 222156238015 its reverse (510832651222), we get a palindrome (732988889237).

The spelling of 222156238015 in words is "two hundred twenty-two billion, one hundred fifty-six million, two hundred thirty-eight thousand, fifteen".