11312201121 has 16 divisors (see below), whose sum is σ = 16549638336. Its totient is φ = 6830006976.

The previous prime is 11312201111. The next prime is 11312201143. The reversal of 11312201121 is 12110221311.

It is not a de Polignac number, because 11312201121 - 2⁷ = 11312200993 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11312201121.

It is not an unprimeable number, because it can be changed into a prime (11312201111) 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, 2734315 + ... + 2738448.

It is an arithmetic number, because the mean of its divisors is an integer number (1034352396).

Almost surely, 2^11312201121 is an apocalyptic number.

It is an amenable number.

11312201121 is a deficient number, since it is larger than the sum of its proper divisors (5237437215).

11312201121 is a wasteful number, since it uses less digits than its factorization.

11312201121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5472832.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 11312201121 its reverse (12110221311), we get a palindrome (23422422432).

The spelling of 11312201121 in words is "eleven billion, three hundred twelve million, two hundred one thousand, one hundred twenty-one".