22000013231 has 8 divisors (see below), whose sum is σ = 25143871104. Its totient is φ = 18856405080.

The previous prime is 22000013209. The next prime is 22000013237. The reversal of 22000013231 is 13231000022.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22000013231 is a prime.

It is a super-2 number, since 2×22000013231² (a number of 21 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 (22000013237) 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, 199796 + ... + 289686.

It is an arithmetic number, because the mean of its divisors is an integer number (3142983888).

Almost surely, 2^22000013231 is an apocalyptic number.

22000013231 is a deficient number, since it is larger than the sum of its proper divisors (3143857873).

22000013231 is an equidigital number, since it uses as much as digits as its factorization.

22000013231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124861.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 22000013231 its reverse (13231000022), we get a palindrome (35231013253).

The spelling of 22000013231 in words is "twenty-two billion, thirteen thousand, two hundred thirty-one".