21113232301291 has 4 divisors (see below), whose sum is σ = 22737327093712. Its totient is φ = 19489137508872.

The previous prime is 21113232301279. The next prime is 21113232301303. The reversal of 21113232301291 is 19210323231112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (21113232301279) and next prime (21113232301303).

It is a cyclic number.

It is not a de Polignac number, because 21113232301291 - 2²⁵ = 21113198746859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21113232301261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 812047396191 + ... + 812047396216.

It is an arithmetic number, because the mean of its divisors is an integer number (5684331773428).

Almost surely, 2^{21113232301291} is an apocalyptic number.

21113232301291 is a deficient number, since it is larger than the sum of its proper divisors (1624094792421).

21113232301291 is a wasteful number, since it uses less digits than its factorization.

21113232301291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1624094792420.

The product of its (nonzero) digits is 3888, while the sum is 31.

The spelling of 21113232301291 in words is "twenty-one trillion, one hundred thirteen billion, two hundred thirty-two million, three hundred one thousand, two hundred ninety-one".