122220331 has 4 divisors (see below), whose sum is σ = 128653000. Its totient is φ = 115787664.

The previous prime is 122220317. The next prime is 122220349. The reversal of 122220331 is 133022221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133022221 = 1151 ⋅115571.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122220331 is a prime.

It is a super-2 number, since 2×122220331² = 29875618619499122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122220311) 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, 3216306 + ... + 3216343.

It is an arithmetic number, because the mean of its divisors is an integer number (32163250).

Almost surely, 2^122220331 is an apocalyptic number.

122220331 is a deficient number, since it is larger than the sum of its proper divisors (6432669).

122220331 is an equidigital number, since it uses as much as digits as its factorization.

122220331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6432668.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 122220331 is about 11055.3304337772. The cubic root of 122220331 is about 496.2659579452.

Adding to 122220331 its reverse (133022221), we get a palindrome (255242552).

The spelling of 122220331 in words is "one hundred twenty-two million, two hundred twenty thousand, three hundred thirty-one".