21114042421291 has 2 divisors, whose sum is σ = 21114042421292. Its totient is φ = 21114042421290.

The previous prime is 21114042421279. The next prime is 21114042421379. The reversal of 21114042421291 is 19212424041112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21114042421291 - 2⁷ = 21114042421163 is a prime.

It is not a weakly prime, because it can be changed into another prime (21114042421271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10557021210645 + 10557021210646.

It is an arithmetic number, because the mean of its divisors is an integer number (10557021210646).

Almost surely, 2^{21114042421291} is an apocalyptic number.

21114042421291 is a deficient number, since it is larger than the sum of its proper divisors (1).

21114042421291 is an equidigital number, since it uses as much as digits as its factorization.

21114042421291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 34.

The spelling of 21114042421291 in words is "twenty-one trillion, one hundred fourteen billion, forty-two million, four hundred twenty-one thousand, two hundred ninety-one".