122220203231 has 16 divisors (see below), whose sum is σ = 144918005760. Its totient is φ = 100866155040.

The previous prime is 122220203221. The next prime is 122220203249. The reversal of 122220203231 is 132302022221.

It is a happy number.

It is not a de Polignac number, because 122220203231 - 2²² = 122216008927 is a prime.

It is a super-2 number, since 2×122220203231² (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 (122220203221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1386761 + ... + 1472258.

It is an arithmetic number, because the mean of its divisors is an integer number (9057375360).

Almost surely, 2^122220203231 is an apocalyptic number.

122220203231 is a deficient number, since it is larger than the sum of its proper divisors (22697802529).

122220203231 is a wasteful number, since it uses less digits than its factorization.

122220203231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2859254.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 122220203231 its reverse (132302022221), we get a palindrome (254522225452).

The spelling of 122220203231 in words is "one hundred twenty-two billion, two hundred twenty million, two hundred three thousand, two hundred thirty-one".