22122420232 has 32 divisors (see below), whose sum is σ = 45263386080. Its totient is φ = 10052760960.

The previous prime is 22122420181. The next prime is 22122420239. The reversal of 22122420232 is 23202422122.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (22122420239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 289003 + ... + 357445.

It is an arithmetic number, because the mean of its divisors is an integer number (1414480815).

Almost surely, 2^22122420232 is an apocalyptic number.

22122420232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22122420232 is an abundant number, since it is smaller than the sum of its proper divisors (23140965848).

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

22122420232 is a wasteful number, since it uses less digits than its factorization.

22122420232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72133 (or 72129 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 22122420232 its reverse (23202422122), we get a palindrome (45324842354).

The spelling of 22122420232 in words is "twenty-two billion, one hundred twenty-two million, four hundred twenty thousand, two hundred thirty-two".