22231311121 has 8 divisors (see below), whose sum is σ = 22275253160. Its totient is φ = 22187405952.

The previous prime is 22231311119. The next prime is 22231311143. The reversal of 22231311121 is 12111313222.

It can be written as a sum of positive squares in 4 ways, for example, as 138650625 + 22092660496 = 11775^2 + 148636^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22231311121 - 2¹ = 22231311119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22231311161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1405171 + ... + 1420903.

It is an arithmetic number, because the mean of its divisors is an integer number (2784406645).

Almost surely, 2^22231311121 is an apocalyptic number.

It is an amenable number.

22231311121 is a deficient number, since it is larger than the sum of its proper divisors (43942039).

22231311121 is a wasteful number, since it uses less digits than its factorization.

22231311121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18435.

The product of its digits is 144, while the sum is 19.

Adding to 22231311121 its reverse (12111313222), we get a palindrome (34342624343).

The spelling of 22231311121 in words is "twenty-two billion, two hundred thirty-one million, three hundred eleven thousand, one hundred twenty-one".