123015140022401 has 4 divisors (see below), whose sum is σ = 134198334569904. Its totient is φ = 111831945474900.

The previous prime is 123015140022391. The next prime is 123015140022413. The reversal of 123015140022401 is 104220041510321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123015140022401 - 2³⁴ = 122997960153217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123015140022461) 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, 5591597273735 + ... + 5591597273756.

It is an arithmetic number, because the mean of its divisors is an integer number (33549583642476).

Almost surely, 2^{123015140022401} is an apocalyptic number.

123015140022401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123015140022401 is a deficient number, since it is larger than the sum of its proper divisors (11183194547503).

123015140022401 is a wasteful number, since it uses less digits than its factorization.

123015140022401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11183194547502.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 123015140022401 its reverse (104220041510321), we get a palindrome (227235181532722).

The spelling of 123015140022401 in words is "one hundred twenty-three trillion, fifteen billion, one hundred forty million, twenty-two thousand, four hundred one".