21412424331103 has 18 divisors (see below), whose sum is σ = 24470790635664. Its totient is φ = 18725034989232.

The previous prime is 21412424331101. The next prime is 21412424331241. The reversal of 21412424331103 is 30113342421412.

It is a happy number.

It is not a de Polignac number, because 21412424331103 - 2¹ = 21412424331101 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 (21412424331101) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 175424775 + ... + 175546792.

It is an arithmetic number, because the mean of its divisors is an integer number (1359488368648).

Almost surely, 2^{21412424331103} is an apocalyptic number.

21412424331103 is a deficient number, since it is larger than the sum of its proper divisors (3058366304561).

21412424331103 is a wasteful number, since it uses less digits than its factorization.

21412424331103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350971631 (or 350971599 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 21412424331103 its reverse (30113342421412), we get a palindrome (51525766752515).

The spelling of 21412424331103 in words is "twenty-one trillion, four hundred twelve billion, four hundred twenty-four million, three hundred thirty-one thousand, one hundred three".