123001421112015 has 16 divisors (see below), whose sum is σ = 196815163154400. Its totient is φ = 65596461468032.

The previous prime is 123001421111963. The next prime is 123001421112023. The reversal of 123001421112015 is 510211124100321.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 123001421112015 - 2¹⁶ = 123001421046479 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 268291980 + ... + 268750049.

It is an arithmetic number, because the mean of its divisors is an integer number (12300947697150).

Almost surely, 2^{123001421112015} is an apocalyptic number.

123001421112015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123001421112015 is a deficient number, since it is larger than the sum of its proper divisors (73813742042385).

123001421112015 is a wasteful number, since it uses less digits than its factorization.

123001421112015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537057306.

The product of its (nonzero) digits is 480, while the sum is 24.

Adding to 123001421112015 its reverse (510211124100321), we get a palindrome (633212545212336).

The spelling of 123001421112015 in words is "one hundred twenty-three trillion, one billion, four hundred twenty-one million, one hundred twelve thousand, fifteen".