122401120431431 has 4 divisors (see below), whose sum is σ = 126621848722200. Its totient is φ = 118180392140664.

The previous prime is 122401120431347. The next prime is 122401120431449. The reversal of 122401120431431 is 134134021104221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122401120431431 is a prime.

It is a super-2 number, since 2×122401120431431² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 4220728290739 = 122401120431431 / (1 + 2 + 2 + 4 + 0 + 1 + 1 + 2 + 0 + 4 + 3 + 1 + 4 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122401120431394 and 122401120431403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122401120431451) 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, 2110364145341 + ... + 2110364145398.

It is an arithmetic number, because the mean of its divisors is an integer number (31655462180550).

Almost surely, 2^{122401120431431} is an apocalyptic number.

122401120431431 is a deficient number, since it is larger than the sum of its proper divisors (4220728290769).

122401120431431 is an equidigital number, since it uses as much as digits as its factorization.

122401120431431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4220728290768.

The product of its (nonzero) digits is 4608, while the sum is 29.

Adding to 122401120431431 its reverse (134134021104221), we get a palindrome (256535141535652).

The spelling of 122401120431431 in words is "one hundred twenty-two trillion, four hundred one billion, one hundred twenty million, four hundred thirty-one thousand, four hundred thirty-one".