21423132402103 has 16 divisors (see below), whose sum is σ = 21900261110112. Its totient is φ = 20951301760000.

The previous prime is 21423132402101. The next prime is 21423132402107. The reversal of 21423132402103 is 30120423132412.

It is a cyclic number.

It is not a de Polignac number, because 21423132402103 - 2¹ = 21423132402101 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 (21423132402101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42342543 + ... + 42845503.

It is an arithmetic number, because the mean of its divisors is an integer number (1368766319382).

Almost surely, 2^{21423132402103} is an apocalyptic number.

21423132402103 is a deficient number, since it is larger than the sum of its proper divisors (477128708009).

21423132402103 is a wasteful number, since it uses less digits than its factorization.

21423132402103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508226.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 21423132402103 its reverse (30120423132412), we get a palindrome (51543555534515).

The spelling of 21423132402103 in words is "twenty-one trillion, four hundred twenty-three billion, one hundred thirty-two million, four hundred two thousand, one hundred three".