122421331 has 4 divisors (see below), whose sum is σ = 123302200. Its totient is φ = 121540464.

The previous prime is 122421319. The next prime is 122421337. The reversal of 122421331 is 133124221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133124221 = 313 ⋅425317.

It is a cyclic number.

It is not a de Polignac number, because 122421331 - 2¹⁹ = 121897043 is a prime.

It is a super-2 number, since 2×122421331² = 29973964567623122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122421299 and 122421308.

It is not an unprimeable number, because it can be changed into a prime (122421337) 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, 440226 + ... + 440503.

It is an arithmetic number, because the mean of its divisors is an integer number (30825550).

Almost surely, 2^122421331 is an apocalyptic number.

122421331 is a deficient number, since it is larger than the sum of its proper divisors (880869).

122421331 is an equidigital number, since it uses as much as digits as its factorization.

122421331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880868.

The product of its digits is 288, while the sum is 19.

The square root of 122421331 is about 11064.4173366698. The cubic root of 122421331 is about 496.5378571318.

Adding to 122421331 its reverse (133124221), we get a palindrome (255545552).

The spelling of 122421331 in words is "one hundred twenty-two million, four hundred twenty-one thousand, three hundred thirty-one".