21234201411 has 4 divisors (see below), whose sum is σ = 28312268552. Its totient is φ = 14156134272.

The previous prime is 21234201349. The next prime is 21234201413. The reversal of 21234201411 is 11410243212.

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

It is not a de Polignac number, because 21234201411 - 2⁷ = 21234201283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21234201413) 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, 3539033566 + ... + 3539033571.

It is an arithmetic number, because the mean of its divisors is an integer number (7078067138).

Almost surely, 2^21234201411 is an apocalyptic number.

21234201411 is a deficient number, since it is larger than the sum of its proper divisors (7078067141).

21234201411 is an equidigital number, since it uses as much as digits as its factorization.

21234201411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7078067140.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 21234201411 its reverse (11410243212), we get a palindrome (32644444623).

The spelling of 21234201411 in words is "twenty-one billion, two hundred thirty-four million, two hundred one thousand, four hundred eleven".