22131343321 has 4 divisors (see below), whose sum is σ = 22132410532. Its totient is φ = 22130276112.

The previous prime is 22131343307. The next prime is 22131343343. The reversal of 22131343321 is 12334313122.

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 628053721 + 21503289600 = 25061^2 + 146640^2 .

It is a cyclic number.

It is not a de Polignac number, because 22131343321 - 2¹⁷ = 22131212249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22131323321) 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, 501870 + ... + 544183.

It is an arithmetic number, because the mean of its divisors is an integer number (5533102633).

Almost surely, 2^22131343321 is an apocalyptic number.

It is an amenable number.

22131343321 is a deficient number, since it is larger than the sum of its proper divisors (1067211).

22131343321 is a wasteful number, since it uses less digits than its factorization.

22131343321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067210.

The product of its digits is 2592, while the sum is 25.

Adding to 22131343321 its reverse (12334313122), we get a palindrome (34465656443).

The spelling of 22131343321 in words is "twenty-two billion, one hundred thirty-one million, three hundred forty-three thousand, three hundred twenty-one".