122731520422 has 16 divisors (see below), whose sum is σ = 210946240512. Its totient is φ = 52461885960.

The previous prime is 122731520389. The next prime is 122731520423. The reversal of 122731520422 is 224025137221.

It is a super-2 number, since 2×122731520422² (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 (122731520423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11439204 + ... + 11449927.

It is an arithmetic number, because the mean of its divisors is an integer number (13184140032).

Almost surely, 2^122731520422 is an apocalyptic number.

122731520422 is a deficient number, since it is larger than the sum of its proper divisors (88214720090).

122731520422 is a wasteful number, since it uses less digits than its factorization.

122731520422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22889523.

The product of its (nonzero) digits is 13440, while the sum is 31.

Adding to 122731520422 its reverse (224025137221), we get a palindrome (346756657643).

The spelling of 122731520422 in words is "one hundred twenty-two billion, seven hundred thirty-one million, five hundred twenty thousand, four hundred twenty-two".