22331012420 has 12 divisors (see below), whose sum is σ = 46895126124. Its totient is φ = 8932404960.

The previous prime is 22331012413. The next prime is 22331012437. The reversal of 22331012420 is 2421013322.

It can be written as a sum of positive squares in 2 ways, for example, as 17738510596 + 4592501824 = 133186^2 + 67768^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1116550621 = 22331012420 / (2 + 2 + 3 + 3 + 1 + 0 + 1 + 2 + 4 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 22331012392 and 22331012401.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 558275291 + ... + 558275330.

It is an arithmetic number, because the mean of its divisors is an integer number (3907927177).

Almost surely, 2^22331012420 is an apocalyptic number.

22331012420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22331012420 is an abundant number, since it is smaller than the sum of its proper divisors (24564113704).

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

22331012420 is a wasteful number, since it uses less digits than its factorization.

22331012420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116550630 (or 1116550628 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 22331012420 its reverse (2421013322), we get a palindrome (24752025742).

The spelling of 22331012420 in words is "twenty-two billion, three hundred thirty-one million, twelve thousand, four hundred twenty".