122522021 has 4 divisors (see below), whose sum is σ = 122635212. Its totient is φ = 122408832.

The previous prime is 122522017. The next prime is 122522041. The reversal of 122522021 is 120225221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120225221 = 10259 ⋅11719.

It can be written as a sum of positive squares in 2 ways, for example, as 100300225 + 22221796 = 10015^2 + 4714^2 .

It is a cyclic number.

It is not a de Polignac number, because 122522021 - 2² = 122522017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122522011) 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, 54956 + ... + 57141.

It is an arithmetic number, because the mean of its divisors is an integer number (30658803).

Almost surely, 2^122522021 is an apocalyptic number.

It is an amenable number.

122522021 is a deficient number, since it is larger than the sum of its proper divisors (113191).

122522021 is a wasteful number, since it uses less digits than its factorization.

122522021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113190.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 122522021 is about 11068.9665732624. The cubic root of 122522021 is about 496.6739518673.

Adding to 122522021 its reverse (120225221), we get a palindrome (242747242).

The spelling of 122522021 in words is "one hundred twenty-two million, five hundred twenty-two thousand, twenty-one".