21432302411 has 4 divisors (see below), whose sum is σ = 23080941072. Its totient is φ = 19783663752.

The previous prime is 21432302399. The next prime is 21432302431. The reversal of 21432302411 is 11420323412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21432302411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21432302431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 824319311 + ... + 824319336.

It is an arithmetic number, because the mean of its divisors is an integer number (5770235268).

Almost surely, 2^21432302411 is an apocalyptic number.

21432302411 is a deficient number, since it is larger than the sum of its proper divisors (1648638661).

21432302411 is a wasteful number, since it uses less digits than its factorization.

21432302411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1648638660.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21432302411 its reverse (11420323412), we get a palindrome (32852625823).

The spelling of 21432302411 in words is "twenty-one billion, four hundred thirty-two million, three hundred two thousand, four hundred eleven".