124167216921 has 16 divisors (see below), whose sum is σ = 181714886400. Its totient is φ = 74791181520.

The previous prime is 124167216919. The next prime is 124167216961. The reversal of 124167216921 is 129612761421.

It is not a de Polignac number, because 124167216921 - 2¹ = 124167216919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (124167216961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11536471 + ... + 11547228.

It is an arithmetic number, because the mean of its divisors is an integer number (11357180400).

Almost surely, 2^124167216921 is an apocalyptic number.

124167216921 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

124167216921 is a deficient number, since it is larger than the sum of its proper divisors (57547669479).

124167216921 is a wasteful number, since it uses less digits than its factorization.

124167216921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23083876.

The product of its digits is 72576, while the sum is 42.

The spelling of 124167216921 in words is "one hundred twenty-four billion, one hundred sixty-seven million, two hundred sixteen thousand, nine hundred twenty-one".