22515131213 has 8 divisors (see below), whose sum is σ = 22626371616. Its totient is φ = 22403934000.

The previous prime is 22515131207. The next prime is 22515131231. The reversal of 22515131213 is 31213151522.

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 22515131213 - 2¹⁰ = 22515130189 is a prime.

It is a super-2 number, since 2×22515131213² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22515133213) 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, 1667138 + ... + 1680588.

It is an arithmetic number, because the mean of its divisors is an integer number (2828296452).

Almost surely, 2^22515131213 is an apocalyptic number.

It is an amenable number.

22515131213 is a deficient number, since it is larger than the sum of its proper divisors (111240403).

22515131213 is a wasteful number, since it uses less digits than its factorization.

22515131213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21595.

The product of its digits is 1800, while the sum is 26.

Adding to 22515131213 its reverse (31213151522), we get a palindrome (53728282735).

The spelling of 22515131213 in words is "twenty-two billion, five hundred fifteen million, one hundred thirty-one thousand, two hundred thirteen".