122431664145 has 32 divisors (see below), whose sum is σ = 224365010688. Its totient is φ = 55846268928.

The previous prime is 122431664123. The next prime is 122431664171. The reversal of 122431664145 is 541466134221.

It is not a de Polignac number, because 122431664145 - 2¹⁰ = 122431663121 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1227744 + ... + 1323713.

It is an arithmetic number, because the mean of its divisors is an integer number (7011406584).

Almost surely, 2^122431664145 is an apocalyptic number.

122431664145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122431664145 is a deficient number, since it is larger than the sum of its proper divisors (101933346543).

122431664145 is a wasteful number, since it uses less digits than its factorization.

122431664145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2551929.

The product of its digits is 138240, while the sum is 39.

Adding to 122431664145 its reverse (541466134221), we get a palindrome (663897798366).

The spelling of 122431664145 in words is "one hundred twenty-two billion, four hundred thirty-one million, six hundred sixty-four thousand, one hundred forty-five".