120122421 has 4 divisors (see below), whose sum is σ = 160163232. Its totient is φ = 80081612.

The previous prime is 120122413. The next prime is 120122441. The reversal of 120122421 is 124221021.

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 120122421 - 2³ = 120122413 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 120122421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120122441) 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, 20020401 + ... + 20020406.

It is an arithmetic number, because the mean of its divisors is an integer number (40040808).

Almost surely, 2^120122421 is an apocalyptic number.

It is an amenable number.

120122421 is a deficient number, since it is larger than the sum of its proper divisors (40040811).

120122421 is an equidigital number, since it uses as much as digits as its factorization.

120122421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40040810.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 120122421 is about 10960.0374543156. The cubic root of 120122421 is about 493.4100890535.

Adding to 120122421 its reverse (124221021), we get a palindrome (244343442).

The spelling of 120122421 in words is "one hundred twenty million, one hundred twenty-two thousand, four hundred twenty-one".