21140124103 has 8 divisors (see below), whose sum is σ = 24749413920. Its totient is φ = 17678152320.

The previous prime is 21140124091. The next prime is 21140124107. The reversal of 21140124103 is 30142104112.

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 21140124103 - 2²¹ = 21138026951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21140124107) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 36829198 + ... + 36829771.

It is an arithmetic number, because the mean of its divisors is an integer number (3093676740).

Almost surely, 2^21140124103 is an apocalyptic number.

21140124103 is a deficient number, since it is larger than the sum of its proper divisors (3609289817).

21140124103 is an equidigital number, since it uses as much as digits as its factorization.

21140124103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73659017.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 21140124103 its reverse (30142104112), we get a palindrome (51282228215).

The spelling of 21140124103 in words is "twenty-one billion, one hundred forty million, one hundred twenty-four thousand, one hundred three".