122540244231 has 4 divisors (see below), whose sum is σ = 163386992312. Its totient is φ = 81693496152.

The previous prime is 122540244217. The next prime is 122540244247. The reversal of 122540244231 is 132442045221.

It is a happy number.

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

It is not a de Polignac number, because 122540244231 - 2⁷ = 122540244103 is a prime.

It is a super-2 number, since 2×122540244231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122540244331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20423374036 + ... + 20423374041.

It is an arithmetic number, because the mean of its divisors is an integer number (40846748078).

Almost surely, 2^122540244231 is an apocalyptic number.

122540244231 is a deficient number, since it is larger than the sum of its proper divisors (40846748081).

122540244231 is an equidigital number, since it uses as much as digits as its factorization.

122540244231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40846748080.

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 122540244231 its reverse (132442045221), we get a palindrome (254982289452).

The spelling of 122540244231 in words is "one hundred twenty-two billion, five hundred forty million, two hundred forty-four thousand, two hundred thirty-one".