23421221311 has 2 divisors, whose sum is σ = 23421221312. Its totient is φ = 23421221310.

The previous prime is 23421221303. The next prime is 23421221393. The reversal of 23421221311 is 11312212432.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23421221311 - 2³ = 23421221303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23421221611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11710610655 + 11710610656.

It is an arithmetic number, because the mean of its divisors is an integer number (11710610656).

Almost surely, 2^23421221311 is an apocalyptic number.

23421221311 is a deficient number, since it is larger than the sum of its proper divisors (1).

23421221311 is an equidigital number, since it uses as much as digits as its factorization.

23421221311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 22.

Adding to 23421221311 its reverse (11312212432), we get a palindrome (34733433743).

The spelling of 23421221311 in words is "twenty-three billion, four hundred twenty-one million, two hundred twenty-one thousand, three hundred eleven".