122313311312 has 20 divisors (see below), whose sum is σ = 236988248820. Its totient is φ = 61155053568.

The previous prime is 122313311293. The next prime is 122313311317. The reversal of 122313311312 is 213113313221.

It can be written as a sum of positive squares in 2 ways, for example, as 46106396176 + 76206915136 = 214724^2 + 276056^2 .

It is a super-2 number, since 2×122313311312² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122313311317) 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, 746798 + ... + 895730.

It is an arithmetic number, because the mean of its divisors is an integer number (11849412441).

Almost surely, 2^122313311312 is an apocalyptic number.

It is an amenable number.

122313311312 is a deficient number, since it is larger than the sum of its proper divisors (114674937508).

122313311312 is a wasteful number, since it uses less digits than its factorization.

122313311312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200270 (or 200264 counting only the distinct ones).

The product of its digits is 648, while the sum is 23.

Adding to 122313311312 its reverse (213113313221), we get a palindrome (335426624533).

The spelling of 122313311312 in words is "one hundred twenty-two billion, three hundred thirteen million, three hundred eleven thousand, three hundred twelve".