22001331313 has 16 divisors (see below), whose sum is σ = 24525219600. Its totient is φ = 19597052160.

The previous prime is 22001331259. The next prime is 22001331361. The reversal of 22001331313 is 31313310022.

It can be written as a sum of positive squares in 8 ways, for example, as 424071649 + 21577259664 = 20593^2 + 146892^2 .

It is a cyclic number.

It is not a de Polignac number, because 22001331313 - 2²¹ = 21999234161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22001331413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 658143 + ... + 690763.

It is an arithmetic number, because the mean of its divisors is an integer number (1532826225).

Almost surely, 2^22001331313 is an apocalyptic number.

It is an amenable number.

22001331313 is a deficient number, since it is larger than the sum of its proper divisors (2523888287).

22001331313 is a wasteful number, since it uses less digits than its factorization.

22001331313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34452.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 22001331313 its reverse (31313310022), we get a palindrome (53314641335).

The spelling of 22001331313 in words is "twenty-two billion, one million, three hundred thirty-one thousand, three hundred thirteen".