21342342411 has 12 divisors (see below), whose sum is σ = 33199199488. Its totient is φ = 13133749104.

The previous prime is 21342342409. The next prime is 21342342443. The reversal of 21342342411 is 11424324312.

21342342411 is a `hidden beast` number, since 2 + 13 + 4 + 234 + 2 + 411 = 666.

It is not a de Polignac number, because 21342342411 - 2¹ = 21342342409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21342342611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91206475 + ... + 91206708.

Almost surely, 2^21342342411 is an apocalyptic number.

21342342411 is a deficient number, since it is larger than the sum of its proper divisors (11856857077).

21342342411 is a wasteful number, since it uses less digits than its factorization.

21342342411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182413202 (or 182413199 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

Adding to 21342342411 its reverse (11424324312), we get a palindrome (32766666723).

The spelling of 21342342411 in words is "twenty-one billion, three hundred forty-two million, three hundred forty-two thousand, four hundred eleven".