22212012130440 has 64 divisors (see below), whose sum is σ = 72693857885760. Its totient is φ = 5384730213120.

The previous prime is 22212012130439. The next prime is 22212012130457. The reversal of 22212012130440 is 4403121021222.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 22212012130440.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8413639639 + ... + 8413642278.

It is an arithmetic number, because the mean of its divisors is an integer number (1135841529465).

Almost surely, 2^{22212012130440} is an apocalyptic number.

22212012130440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22212012130440 is an abundant number, since it is smaller than the sum of its proper divisors (50481845755320).

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

22212012130440 is a wasteful number, since it uses less digits than its factorization.

22212012130440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16827281942 (or 16827281938 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 22212012130440 its reverse (4403121021222), we get a palindrome (26615133151662).

The spelling of 22212012130440 in words is "twenty-two trillion, two hundred twelve billion, twelve million, one hundred thirty thousand, four hundred forty".