22115231020 has 12 divisors (see below), whose sum is σ = 46441985184. Its totient is φ = 8846092400.

The previous prime is 22115230987. The next prime is 22115231023. The reversal of 22115231020 is 2013251122.

It is not an unprimeable number, because it can be changed into a prime (22115231023) 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, 552880756 + ... + 552880795.

It is an arithmetic number, because the mean of its divisors is an integer number (3870165432).

Almost surely, 2^22115231020 is an apocalyptic number.

22115231020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22115231020 is an abundant number, since it is smaller than the sum of its proper divisors (24326754164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22115231020 is a wasteful number, since it uses less digits than its factorization.

22115231020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105761560 (or 1105761558 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 22115231020 its reverse (2013251122), we get a palindrome (24128482142).

The spelling of 22115231020 in words is "twenty-two billion, one hundred fifteen million, two hundred thirty-one thousand, twenty".