21400133411 has 2 divisors, whose sum is σ = 21400133412. Its totient is φ = 21400133410.

The previous prime is 21400133387. The next prime is 21400133413. The reversal of 21400133411 is 11433100412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21400133411 - 2¹⁸ = 21399871267 is a prime.

It is a Sophie Germain prime.

Together with 21400133413, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (21400133413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10700066705 + 10700066706.

It is an arithmetic number, because the mean of its divisors is an integer number (10700066706).

Almost surely, 2^21400133411 is an apocalyptic number.

21400133411 is a deficient number, since it is larger than the sum of its proper divisors (1).

21400133411 is an equidigital number, since it uses as much as digits as its factorization.

21400133411 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21400133411 its reverse (11433100412), we get a palindrome (32833233823).

The spelling of 21400133411 in words is "twenty-one billion, four hundred million, one hundred thirty-three thousand, four hundred eleven".