21401113411 has 2 divisors, whose sum is σ = 21401113412. Its totient is φ = 21401113410.

The previous prime is 21401113403. The next prime is 21401113423. The reversal of 21401113411 is 11431110412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21401113411 - 2³ = 21401113403 is a prime.

It is not a weakly prime, because it can be changed into another prime (21401113451) 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, 10700556705 + 10700556706.

It is an arithmetic number, because the mean of its divisors is an integer number (10700556706).

Almost surely, 2^21401113411 is an apocalyptic number.

21401113411 is a deficient number, since it is larger than the sum of its proper divisors (1).

21401113411 is an equidigital number, since it uses as much as digits as its factorization.

21401113411 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 21401113411 its reverse (11431110412), we get a palindrome (32832223823).

The spelling of 21401113411 in words is "twenty-one billion, four hundred one million, one hundred thirteen thousand, four hundred eleven".