22331215311121 has 4 divisors (see below), whose sum is σ = 22349385544500. Its totient is φ = 22313045077744.

The previous prime is 22331215311089. The next prime is 22331215311143. The reversal of 22331215311121 is 12111351213322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18548190311121 + 3783025000000 = 4306761^2 + 1945000^2 .

It is a cyclic number.

It is not a de Polignac number, because 22331215311121 - 2⁵ = 22331215311089 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22331215311121.

It is not an unprimeable number, because it can be changed into a prime (22331215311151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9085114846 + ... + 9085117303.

It is an arithmetic number, because the mean of its divisors is an integer number (5587346386125).

Almost surely, 2^{22331215311121} is an apocalyptic number.

It is an amenable number.

22331215311121 is a deficient number, since it is larger than the sum of its proper divisors (18170233379).

22331215311121 is a wasteful number, since it uses less digits than its factorization.

22331215311121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18170233378.

The product of its digits is 2160, while the sum is 28.

Adding to 22331215311121 its reverse (12111351213322), we get a palindrome (34442566524443).

The spelling of 22331215311121 in words is "twenty-two trillion, three hundred thirty-one billion, two hundred fifteen million, three hundred eleven thousand, one hundred twenty-one".