22001202231 has 12 divisors (see below), whose sum is σ = 30311753976. Its totient is φ = 14194322160.

The previous prime is 22001202221. The next prime is 22001202257. The reversal of 22001202231 is 13220210022.

It is a happy number.

It is not a de Polignac number, because 22001202231 - 2²⁹ = 21464331319 is a prime.

It is a super-2 number, since 2×22001202231² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22001202231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001202211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3812796 + ... + 3818561.

It is an arithmetic number, because the mean of its divisors is an integer number (2525979498).

Almost surely, 2^22001202231 is an apocalyptic number.

22001202231 is a deficient number, since it is larger than the sum of its proper divisors (8310551745).

22001202231 is an equidigital number, since it uses as much as digits as its factorization.

22001202231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7631422 (or 7631391 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 22001202231 its reverse (13220210022), we get a palindrome (35221412253).

The spelling of 22001202231 in words is "twenty-two billion, one million, two hundred two thousand, two hundred thirty-one".