21412343411 has 2 divisors, whose sum is σ = 21412343412. Its totient is φ = 21412343410.

The previous prime is 21412343321. The next prime is 21412343431. The reversal of 21412343411 is 11434321412.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21412343411 is a prime.

It is a super-2 number, since 2×21412343411² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21412343431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10706171705 + 10706171706.

It is an arithmetic number, because the mean of its divisors is an integer number (10706171706).

Almost surely, 2^21412343411 is an apocalyptic number.

21412343411 is a deficient number, since it is larger than the sum of its proper divisors (1).

21412343411 is an equidigital number, since it uses as much as digits as its factorization.

21412343411 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 26.

Adding to 21412343411 its reverse (11434321412), we get a palindrome (32846664823).

The spelling of 21412343411 in words is "twenty-one billion, four hundred twelve million, three hundred forty-three thousand, four hundred eleven".