22185921220955 has 16 divisors (see below), whose sum is σ = 26743443732864. Its totient is φ = 17668627658880.

The previous prime is 22185921220949. The next prime is 22185921220961. The reversal of 22185921220955 is 55902212958122.

It is an interprime number because it is at equal distance from previous prime (22185921220949) and next prime (22185921220961).

It is not a de Polignac number, because 22185921220955 - 2⁶ = 22185921220891 is a prime.

It is a super-2 number, since 2×22185921220955² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22185921220897 and 22185921220906.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5733776 + ... + 8789085.

It is an arithmetic number, because the mean of its divisors is an integer number (1671465233304).

Almost surely, 2^{22185921220955} is an apocalyptic number.

22185921220955 is a deficient number, since it is larger than the sum of its proper divisors (4557522511909).

22185921220955 is a wasteful number, since it uses less digits than its factorization.

22185921220955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14524246.

The product of its (nonzero) digits is 2592000, while the sum is 53.

The spelling of 22185921220955 in words is "twenty-two trillion, one hundred eighty-five billion, nine hundred twenty-one million, two hundred twenty thousand, nine hundred fifty-five".