122021231 has 4 divisors (see below), whose sum is σ = 123229464. Its totient is φ = 120813000.

The previous prime is 122021213. The next prime is 122021243. The reversal of 122021231 is 132120221.

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: 132120221 = 101 ⋅1308121.

It is a cyclic number.

It is not a de Polignac number, because 122021231 - 2¹⁴ = 122004847 is a prime.

It is a super-2 number, since 2×122021231² = 29778361629510722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122021201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 603965 + ... + 604166.

It is an arithmetic number, because the mean of its divisors is an integer number (30807366).

Almost surely, 2^122021231 is an apocalyptic number.

122021231 is a deficient number, since it is larger than the sum of its proper divisors (1208233).

122021231 is a wasteful number, since it uses less digits than its factorization.

122021231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1208232.

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

The square root of 122021231 is about 11046.3220575900. The cubic root of 122021231 is about 495.9963348996.

Adding to 122021231 its reverse (132120221), we get a palindrome (254141452).

The spelling of 122021231 in words is "one hundred twenty-two million, twenty-one thousand, two hundred thirty-one".