21213420232103 has 8 divisors (see below), whose sum is σ = 23142067027200. Its totient is φ = 19284799111480.

The previous prime is 21213420232093. The next prime is 21213420232141. The reversal of 21213420232103 is 30123202431212.

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 21213420232103 - 2³² = 21209125264807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21213420232163) 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, 4670303 + ... + 8014896.

It is an arithmetic number, because the mean of its divisors is an integer number (2892758378400).

Almost surely, 2^{21213420232103} is an apocalyptic number.

21213420232103 is a deficient number, since it is larger than the sum of its proper divisors (1928646795097).

21213420232103 is a wasteful number, since it uses less digits than its factorization.

21213420232103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12837237.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 21213420232103 its reverse (30123202431212), we get a palindrome (51336622663315).

The spelling of 21213420232103 in words is "twenty-one trillion, two hundred thirteen billion, four hundred twenty million, two hundred thirty-two thousand, one hundred three".