122431255533 has 6 divisors (see below), whose sum is σ = 176845146894. Its totient is φ = 81620837016.

The previous prime is 122431255519. The next prime is 122431255559. The reversal of 122431255533 is 335552134221.

122431255533 is a `hidden beast` number, since 1 + 22 + 43 + 12 + 55 + 533 = 666.

It can be written as a sum of positive squares in only one way, i.e., 66771593604 + 55659661929 = 258402^2 + 235923^2 .

It is not a de Polignac number, because 122431255533 - 2⁵ = 122431255501 is a prime.

It is a super-2 number, since 2×122431255533² (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 (122431255033) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6801736410 + ... + 6801736427.

It is an arithmetic number, because the mean of its divisors is an integer number (29474191149).

Almost surely, 2^122431255533 is an apocalyptic number.

It is an amenable number.

122431255533 is a deficient number, since it is larger than the sum of its proper divisors (54413891361).

122431255533 is a wasteful number, since it uses less digits than its factorization.

122431255533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13603472843 (or 13603472840 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

Adding to 122431255533 its reverse (335552134221), we get a palindrome (457983389754).

The spelling of 122431255533 in words is "one hundred twenty-two billion, four hundred thirty-one million, two hundred fifty-five thousand, five hundred thirty-three".