122545221 has 16 divisors (see below), whose sum is σ = 169150464. Its totient is φ = 78853824.

The previous prime is 122545153. The next prime is 122545237.

122545221 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 122545221 - 2¹⁰ = 122544197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122545191 and 122545200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122545021) 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, 9751 + ... + 18443.

It is an arithmetic number, because the mean of its divisors is an integer number (10571904).

Almost surely, 2^122545221 is an apocalyptic number.

It is an amenable number.

122545221 is a deficient number, since it is larger than the sum of its proper divisors (46605243).

122545221 is a wasteful number, since it uses less digits than its factorization.

122545221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8860.

The product of its digits is 1600, while the sum is 24.

The square root of 122545221 is about 11070.0144986355. The cubic root of 122545221 is about 496.7052989083.

The spelling of 122545221 in words is "one hundred twenty-two million, five hundred forty-five thousand, two hundred twenty-one".