21314441311 has 2 divisors, whose sum is σ = 21314441312. Its totient is φ = 21314441310.

The previous prime is 21314441287. The next prime is 21314441347. The reversal of 21314441311 is 11314441312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21314441311 - 2⁵ = 21314441279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21314447311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10657220655 + 10657220656.

It is an arithmetic number, because the mean of its divisors is an integer number (10657220656).

Almost surely, 2^21314441311 is an apocalyptic number.

21314441311 is a deficient number, since it is larger than the sum of its proper divisors (1).

21314441311 is an equidigital number, since it uses as much as digits as its factorization.

21314441311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 25.

Adding to 21314441311 its reverse (11314441312), we get a palindrome (32628882623).

Subtracting from 21314441311 its reverse (11314441312), we obtain a palindrome (9999999999).

The spelling of 21314441311 in words is "twenty-one billion, three hundred fourteen million, four hundred forty-one thousand, three hundred eleven".