115212212511 has 16 divisors (see below), whose sum is σ = 167587125120. Its totient is φ = 69823197920.

The previous prime is 115212212389. The next prime is 115212212567.

115212212511 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 115212212511 - 2¹⁹ = 115211688223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115212212581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1667725 + ... + 1735433.

It is an arithmetic number, because the mean of its divisors is an integer number (10474195320).

Almost surely, 2^115212212511 is an apocalyptic number.

115212212511 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

115212212511 is a deficient number, since it is larger than the sum of its proper divisors (52374912609).

115212212511 is a wasteful number, since it uses less digits than its factorization.

115212212511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119286.

The product of its digits is 400, while the sum is 24.

It can be divided in two parts, 115212 and 212511, that added together give a palindrome (327723).

The spelling of 115212212511 in words is "one hundred fifteen billion, two hundred twelve million, two hundred twelve thousand, five hundred eleven".