122123021 has 4 divisors (see below), whose sum is σ = 122241600. Its totient is φ = 122004444.

The previous prime is 122123017. The next prime is 122123063. The reversal of 122123021 is 120321221.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 122123021 - 2² = 122123017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122122987 and 122123005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122123011) 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, 57731 + ... + 59808.

It is an arithmetic number, because the mean of its divisors is an integer number (30560400).

Almost surely, 2^122123021 is an apocalyptic number.

It is an amenable number.

122123021 is a deficient number, since it is larger than the sum of its proper divisors (118579).

122123021 is a wasteful number, since it uses less digits than its factorization.

122123021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118578.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 122123021 is about 11050.9285130255. The cubic root of 122123021 is about 496.1342164638.

Adding to 122123021 its reverse (120321221), we get a palindrome (242444242).

It can be divided in two parts, 1221 and 23021, that added together give a palindrome (24242).

The spelling of 122123021 in words is "one hundred twenty-two million, one hundred twenty-three thousand, twenty-one".