21413423411 has 2 divisors, whose sum is σ = 21413423412. Its totient is φ = 21413423410.

The previous prime is 21413423389. The next prime is 21413423417. The reversal of 21413423411 is 11432431412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21413423411 - 2¹⁴ = 21413407027 is a prime.

It is not a weakly prime, because it can be changed into another prime (21413423417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10706711705 + 10706711706.

It is an arithmetic number, because the mean of its divisors is an integer number (10706711706).

Almost surely, 2^21413423411 is an apocalyptic number.

21413423411 is a deficient number, since it is larger than the sum of its proper divisors (1).

21413423411 is an equidigital number, since it uses as much as digits as its factorization.

21413423411 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 21413423411 its reverse (11432431412), we get a palindrome (32845854823).

The spelling of 21413423411 in words is "twenty-one billion, four hundred thirteen million, four hundred twenty-three thousand, four hundred eleven".