122321021 has 4 divisors (see below), whose sum is σ = 122388000. Its totient is φ = 122254044.

The previous prime is 122320997. The next prime is 122321027. The reversal of 122321021 is 120123221.

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, and also an emirpimes, since its reverse is a distinct semiprime: 120123221 = 1361 ⋅88261.

It is a cyclic number.

It is not a de Polignac number, because 122321021 - 2²² = 118126717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122320987 and 122321005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122321027) 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, 30671 + ... + 34428.

It is an arithmetic number, because the mean of its divisors is an integer number (30597000).

Almost surely, 2^122321021 is an apocalyptic number.

It is an amenable number.

122321021 is a deficient number, since it is larger than the sum of its proper divisors (66979).

122321021 is an equidigital number, since it uses as much as digits as its factorization.

122321021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66978.

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

The square root of 122321021 is about 11059.8834080654. The cubic root of 122321021 is about 496.4022017900.

Adding to 122321021 its reverse (120123221), we get a palindrome (242444242).

The spelling of 122321021 in words is "one hundred twenty-two million, three hundred twenty-one thousand, twenty-one".