22185420481 has 16 divisors (see below), whose sum is σ = 26258964480. Its totient is φ = 18349324560.

The previous prime is 22185420463. The next prime is 22185420487. The reversal of 22185420481 is 18402458122.

It is not a de Polignac number, because 22185420481 - 2⁵ = 22185420449 is a prime.

It is a super-2 number, since 2×22185420481² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22185420481.

It is not an unprimeable number, because it can be changed into a prime (22185420487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 451521 + ... + 498238.

It is an arithmetic number, because the mean of its divisors is an integer number (1641185280).

Almost surely, 2^22185420481 is an apocalyptic number.

It is an amenable number.

22185420481 is a deficient number, since it is larger than the sum of its proper divisors (4073543999).

22185420481 is an equidigital number, since it uses as much as digits as its factorization.

22185420481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949884.

The product of its (nonzero) digits is 40960, while the sum is 37.

The spelling of 22185420481 in words is "twenty-two billion, one hundred eighty-five million, four hundred twenty thousand, four hundred eighty-one".