21412423111231 has 2 divisors, whose sum is σ = 21412423111232. Its totient is φ = 21412423111230.

The previous prime is 21412423111193. The next prime is 21412423111253. The reversal of 21412423111231 is 13211132421412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21412423111231 - 2¹⁵ = 21412423078463 is a prime.

It is a super-2 number, since 2×21412423111231² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21412423111231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21412423114231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10706211555615 + 10706211555616.

It is an arithmetic number, because the mean of its divisors is an integer number (10706211555616).

Almost surely, 2^{21412423111231} is an apocalyptic number.

21412423111231 is a deficient number, since it is larger than the sum of its proper divisors (1).

21412423111231 is an equidigital number, since it uses as much as digits as its factorization.

21412423111231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 28.

Adding to 21412423111231 its reverse (13211132421412), we get a palindrome (34623555532643).

The spelling of 21412423111231 in words is "twenty-one trillion, four hundred twelve billion, four hundred twenty-three million, one hundred eleven thousand, two hundred thirty-one".