11312232031121 has 16 divisors (see below), whose sum is σ = 12985655994240. Its totient is φ = 9653161875840.

The previous prime is 11312232031099. The next prime is 11312232031127. The reversal of 11312232031121 is 12113023221311.

It is a happy number.

It is not a de Polignac number, because 11312232031121 - 2⁶ = 11312232031057 is a prime.

It is a super-2 number, since 2×11312232031121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11312232031127) 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, 22645370 + ... + 23139516.

It is an arithmetic number, because the mean of its divisors is an integer number (811603499640).

Almost surely, 2^{11312232031121} is an apocalyptic number.

It is an amenable number.

11312232031121 is a deficient number, since it is larger than the sum of its proper divisors (1673423963119).

11312232031121 is a wasteful number, since it uses less digits than its factorization.

11312232031121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508664.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 11312232031121 its reverse (12113023221311), we get a palindrome (23425255252432).

The spelling of 11312232031121 in words is "eleven trillion, three hundred twelve billion, two hundred thirty-two million, thirty-one thousand, one hundred twenty-one".