21013032103 has 8 divisors (see below), whose sum is σ = 24173934080. Its totient is φ = 17891890200.

The previous prime is 21013032091. The next prime is 21013032137. The reversal of 21013032103 is 30123031012.

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 21013032103 - 2²⁹ = 20476161191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21013035103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9938883 + ... + 9940996.

It is an arithmetic number, because the mean of its divisors is an integer number (3021741760).

Almost surely, 2^21013032103 is an apocalyptic number.

21013032103 is a deficient number, since it is larger than the sum of its proper divisors (3160901977).

21013032103 is a wasteful number, since it uses less digits than its factorization.

21013032103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19880037.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21013032103 its reverse (30123031012), we get a palindrome (51136063115).

The spelling of 21013032103 in words is "twenty-one billion, thirteen million, thirty-two thousand, one hundred three".