122120455131 has 24 divisors (see below), whose sum is σ = 178851007296. Its totient is φ = 80281134720.

The previous prime is 122120455097. The next prime is 122120455217. The reversal of 122120455131 is 131554021221.

It is a happy number.

122120455131 is a `hidden beast` number, since 1 + 22 + 120 + 4 + 5 + 513 + 1 = 666.

It is not a de Polignac number, because 122120455131 - 2¹¹ = 122120453083 is a prime.

It is a super-2 number, since 2×122120455131² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122120455095 and 122120455104.

It is not an unprimeable number, because it can be changed into a prime (122120455231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3518046 + ... + 3552588.

It is an arithmetic number, because the mean of its divisors is an integer number (7452125304).

Almost surely, 2^122120455131 is an apocalyptic number.

122120455131 is a deficient number, since it is larger than the sum of its proper divisors (56730552165).

122120455131 is a wasteful number, since it uses less digits than its factorization.

122120455131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40003 (or 40000 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 122120455131 its reverse (131554021221), we get a palindrome (253674476352).

The spelling of 122120455131 in words is "one hundred twenty-two billion, one hundred twenty million, four hundred fifty-five thousand, one hundred thirty-one".