21233130302191 has 4 divisors (see below), whose sum is σ = 21233694405672. Its totient is φ = 21232566198712.

The previous prime is 21233130302179. The next prime is 21233130302201. The reversal of 21233130302191 is 19120303133212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 21233130302191 - 2⁷ = 21233130302063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21233130302141) 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, 281995276 + ... + 282070561.

It is an arithmetic number, because the mean of its divisors is an integer number (5308423601418).

Almost surely, 2^{21233130302191} is an apocalyptic number.

21233130302191 is a deficient number, since it is larger than the sum of its proper divisors (564103481).

21233130302191 is an equidigital number, since it uses as much as digits as its factorization.

21233130302191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564103480.

The product of its (nonzero) digits is 5832, while the sum is 31.

The spelling of 21233130302191 in words is "twenty-one trillion, two hundred thirty-three billion, one hundred thirty million, three hundred two thousand, one hundred ninety-one".