21103124339 has 8 divisors (see below), whose sum is σ = 23089907568. Its totient is φ = 19127727360.

The previous prime is 21103124323. The next prime is 21103124377. The reversal of 21103124339 is 93342130112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21103124339 - 2⁴ = 21103124323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21103124039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2842682 + ... + 2850095.

It is an arithmetic number, because the mean of its divisors is an integer number (2886238446).

Almost surely, 2^21103124339 is an apocalyptic number.

21103124339 is a deficient number, since it is larger than the sum of its proper divisors (1986783229).

21103124339 is a wasteful number, since it uses less digits than its factorization.

21103124339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5693125.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 21103124339 in words is "twenty-one billion, one hundred three million, one hundred twenty-four thousand, three hundred thirty-nine".