215235011165106 has 128 divisors (see below), whose sum is σ = 459382130645760. Its totient is φ = 67035935232000.

The previous prime is 215235011165099. The next prime is 215235011165107. The reversal of 215235011165106 is 601561110532512.

It is a super-2 number, since 2×215235011165106² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (215235011165107) 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 63 ways as a sum of consecutive naturals, for example, 13177914516 + ... + 13177930848.

It is an arithmetic number, because the mean of its divisors is an integer number (3588922895670).

Almost surely, 2^{215235011165106} is an apocalyptic number.

215235011165106 is an abundant number, since it is smaller than the sum of its proper divisors (244147119480654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215235011165106 is a wasteful number, since it uses less digits than its factorization.

215235011165106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20812.

The product of its (nonzero) digits is 54000, while the sum is 39.

Adding to 215235011165106 its reverse (601561110532512), we get a palindrome (816796121697618).

The spelling of 215235011165106 in words is "two hundred fifteen trillion, two hundred thirty-five billion, eleven million, one hundred sixty-five thousand, one hundred six".