22521310412 has 6 divisors (see below), whose sum is σ = 39412293228. Its totient is φ = 11260655204.

The previous prime is 22521310403. The next prime is 22521310421. The reversal of 22521310412 is 21401312522.

It is an interprime number because it is at equal distance from previous prime (22521310403) and next prime (22521310421).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2815163798 + ... + 2815163805.

It is an arithmetic number, because the mean of its divisors is an integer number (6568715538).

Almost surely, 2^22521310412 is an apocalyptic number.

It is an amenable number.

22521310412 is a deficient number, since it is larger than the sum of its proper divisors (16890982816).

22521310412 is a wasteful number, since it uses less digits than its factorization.

22521310412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5630327607 (or 5630327605 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 22521310412 its reverse (21401312522), we get a palindrome (43922622934).

The spelling of 22521310412 in words is "twenty-two billion, five hundred twenty-one million, three hundred ten thousand, four hundred twelve".