455522681221 has 4 divisors (see below), whose sum is σ = 479497559200. Its totient is φ = 431547803244.

The previous prime is 455522681179. The next prime is 455522681291. The reversal of 455522681221 is 122186225554.

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, and also an emirpimes, since its reverse is a distinct semiprime: 122186225554 = 2 ⋅61093112777.

It is not a de Polignac number, because 455522681221 - 2⁹ = 455522680709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (455522681291) 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, 11987438961 + ... + 11987438998.

It is an arithmetic number, because the mean of its divisors is an integer number (119874389800).

Almost surely, 2^455522681221 is an apocalyptic number.

It is an amenable number.

455522681221 is a deficient number, since it is larger than the sum of its proper divisors (23974877979).

455522681221 is a wasteful number, since it uses less digits than its factorization.

455522681221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23974877978.

The product of its digits is 384000, while the sum is 43.

The spelling of 455522681221 in words is "four hundred fifty-five billion, five hundred twenty-two million, six hundred eighty-one thousand, two hundred twenty-one".