122020121231 has 4 divisors (see below), whose sum is σ = 122020935912. Its totient is φ = 122019306552.

The previous prime is 122020121183. The next prime is 122020121239. The reversal of 122020121231 is 132121020221.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 122020121231 - 2²⁶ = 121953012367 is a prime.

It is a super-2 number, since 2×122020121231² (a number of 23 digits) 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 (122020121239) 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, 110636 + ... + 506241.

It is an arithmetic number, because the mean of its divisors is an integer number (30505233978).

Almost surely, 2^122020121231 is an apocalyptic number.

122020121231 is a deficient number, since it is larger than the sum of its proper divisors (814681).

122020121231 is an equidigital number, since it uses as much as digits as its factorization.

122020121231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814680.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 122020121231 its reverse (132121020221), we get a palindrome (254141141452).

The spelling of 122020121231 in words is "one hundred twenty-two billion, twenty million, one hundred twenty-one thousand, two hundred thirty-one".