22231213313 has 4 divisors (see below), whose sum is σ = 22427949828. Its totient is φ = 22034476800.

The previous prime is 22231213307. The next prime is 22231213349. The reversal of 22231213313 is 31331213222.

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 2571808369 + 19659404944 = 50713^2 + 140212^2 .

It is a cyclic number.

It is not a de Polignac number, because 22231213313 - 2¹⁴ = 22231196929 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22231213363) 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, 98368088 + ... + 98368313.

It is an arithmetic number, because the mean of its divisors is an integer number (5606987457).

Almost surely, 2^22231213313 is an apocalyptic number.

It is an amenable number.

22231213313 is a deficient number, since it is larger than the sum of its proper divisors (196736515).

22231213313 is a wasteful number, since it uses less digits than its factorization.

22231213313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196736514.

The product of its digits is 1296, while the sum is 23.

Adding to 22231213313 its reverse (31331213222), we get a palindrome (53562426535).

Subtracting 22231213313 from its reverse (31331213222), we obtain a palindrome (9099999909).

The spelling of 22231213313 in words is "twenty-two billion, two hundred thirty-one million, two hundred thirteen thousand, three hundred thirteen".