122455554221 has 16 divisors (see below), whose sum is σ = 164415850368. Its totient is φ = 88079918400.

The previous prime is 122455554217. The next prime is 122455554227.

122455554221 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 122455554221 - 2² = 122455554217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122455554227) 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, 61165610 + ... + 61167611.

It is an arithmetic number, because the mean of its divisors is an integer number (10275990648).

Almost surely, 2^122455554221 is an apocalyptic number.

122455554221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122455554221 is a deficient number, since it is larger than the sum of its proper divisors (41960296147).

122455554221 is a wasteful number, since it uses less digits than its factorization.

122455554221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122333252.

The product of its digits is 160000, while the sum is 38.

It can be divided in two parts, 122455 and 554221, that added together give a palindrome (676676).

The spelling of 122455554221 in words is "one hundred twenty-two billion, four hundred fifty-five million, five hundred fifty-four thousand, two hundred twenty-one".