22012012212009 has 4 divisors (see below), whose sum is σ = 29349349616016. Its totient is φ = 14674674808004.

The previous prime is 22012012211951. The next prime is 22012012212023. The reversal of 22012012212009 is 90021221021022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22012012212009 - 2²³ = 22012003823401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22012012212009.

It is not an unprimeable number, because it can be changed into a prime (22012012212109) 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, 3668668701999 + ... + 3668668702004.

It is an arithmetic number, because the mean of its divisors is an integer number (7337337404004).

Almost surely, 2^{22012012212009} is an apocalyptic number.

It is an amenable number.

22012012212009 is a deficient number, since it is larger than the sum of its proper divisors (7337337404007).

22012012212009 is an equidigital number, since it uses as much as digits as its factorization.

22012012212009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7337337404006.

The product of its (nonzero) digits is 576, while the sum is 24.

The spelling of 22012012212009 in words is "twenty-two trillion, twelve billion, twelve million, two hundred twelve thousand, nine".