11331152121 has 16 divisors (see below), whose sum is σ = 15470438400. Its totient is φ = 7373833488.

The previous prime is 11331152111. The next prime is 11331152123. The reversal of 11331152121 is 12125113311.

It is not a de Polignac number, because 11331152121 - 2⁵ = 11331152089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11331152123) 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, 52581 + ... + 159458.

It is an arithmetic number, because the mean of its divisors is an integer number (966902400).

Almost surely, 2^11331152121 is an apocalyptic number.

It is an amenable number.

11331152121 is a deficient number, since it is larger than the sum of its proper divisors (4139286279).

11331152121 is a wasteful number, since it uses less digits than its factorization.

11331152121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212468.

The product of its digits is 180, while the sum is 21.

Adding to 11331152121 its reverse (12125113311), we get a palindrome (23456265432).

The spelling of 11331152121 in words is "eleven billion, three hundred thirty-one million, one hundred fifty-two thousand, one hundred twenty-one".