122112311331 has 4 divisors (see below), whose sum is σ = 162816415112. Its totient is φ = 81408207552.

The previous prime is 122112311323. The next prime is 122112311333. The reversal of 122112311331 is 133113211221.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 122112311331 - 2³ = 122112311323 is a prime.

It is a super-2 number, since 2×122112311331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122112311298 and 122112311307.

It is not an unprimeable number, because it can be changed into a prime (122112311333) 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, 20352051886 + ... + 20352051891.

It is an arithmetic number, because the mean of its divisors is an integer number (40704103778).

Almost surely, 2^122112311331 is an apocalyptic number.

122112311331 is a deficient number, since it is larger than the sum of its proper divisors (40704103781).

122112311331 is an equidigital number, since it uses as much as digits as its factorization.

122112311331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40704103780.

The product of its digits is 216, while the sum is 21.

Adding to 122112311331 its reverse (133113211221), we get a palindrome (255225522552).

The spelling of 122112311331 in words is "one hundred twenty-two billion, one hundred twelve million, three hundred eleven thousand, three hundred thirty-one".