21342231103 has 16 divisors (see below), whose sum is σ = 22708408320. Its totient is φ = 19988611456.

The previous prime is 21342231083. The next prime is 21342231181. The reversal of 21342231103 is 30113224312.

It is a cyclic number.

It is not a de Polignac number, because 21342231103 - 2²⁵ = 21308676671 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 (21342231503) 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, 3037128 + ... + 3044146.

It is an arithmetic number, because the mean of its divisors is an integer number (1419275520).

Almost surely, 2^21342231103 is an apocalyptic number.

21342231103 is a deficient number, since it is larger than the sum of its proper divisors (1366177217).

21342231103 is a wasteful number, since it uses less digits than its factorization.

21342231103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7886.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21342231103 its reverse (30113224312), we get a palindrome (51455455415).

The spelling of 21342231103 in words is "twenty-one billion, three hundred forty-two million, two hundred thirty-one thousand, one hundred three".