22231122313 has 4 divisors (see below), whose sum is σ = 22231673748. Its totient is φ = 22230570880.

The previous prime is 22231122293. The next prime is 22231122371. The reversal of 22231122313 is 31322113222.

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 19036272784 + 3194849529 = 137972^2 + 56523^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22231122313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22231122013) 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, 210028 + ... + 297613.

It is an arithmetic number, because the mean of its divisors is an integer number (5557918437).

Almost surely, 2^22231122313 is an apocalyptic number.

It is an amenable number.

22231122313 is a deficient number, since it is larger than the sum of its proper divisors (551435).

22231122313 is an equidigital number, since it uses as much as digits as its factorization.

22231122313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551434.

The product of its digits is 864, while the sum is 22.

Adding to 22231122313 its reverse (31322113222), we get a palindrome (53553235535).

Subtracting 22231122313 from its reverse (31322113222), we obtain a palindrome (9090990909).

The spelling of 22231122313 in words is "twenty-two billion, two hundred thirty-one million, one hundred twenty-two thousand, three hundred thirteen".