122311221031 has 4 divisors (see below), whose sum is σ = 123572161552. Its totient is φ = 121050280512.

The previous prime is 122311221023. The next prime is 122311221041. The reversal of 122311221031 is 130122113221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130122113221 = 241 ⋅539925781.

It is a cyclic number.

It is not a de Polignac number, because 122311221031 - 2³ = 122311221023 is a prime.

It is a super-2 number, since 2×122311221031² (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 (122311221041) 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, 630470115 + ... + 630470308.

It is an arithmetic number, because the mean of its divisors is an integer number (30893040388).

Almost surely, 2^122311221031 is an apocalyptic number.

122311221031 is a deficient number, since it is larger than the sum of its proper divisors (1260940521).

122311221031 is an equidigital number, since it uses as much as digits as its factorization.

122311221031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260940520.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 122311221031 its reverse (130122113221), we get a palindrome (252433334252).

The spelling of 122311221031 in words is "one hundred twenty-two billion, three hundred eleven million, two hundred twenty-one thousand, thirty-one".