21020032332191 has 2 divisors, whose sum is σ = 21020032332192. Its totient is φ = 21020032332190.

The previous prime is 21020032332163. The next prime is 21020032332253. The reversal of 21020032332191 is 19123323002012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21020032332191 - 2⁶ = 21020032332127 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21020032352191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10510016166095 + 10510016166096.

It is an arithmetic number, because the mean of its divisors is an integer number (10510016166096).

Almost surely, 2^{21020032332191} is an apocalyptic number.

21020032332191 is a deficient number, since it is larger than the sum of its proper divisors (1).

21020032332191 is an equidigital number, since it uses as much as digits as its factorization.

21020032332191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 21020032332191 in words is "twenty-one trillion, twenty billion, thirty-two million, three hundred thirty-two thousand, one hundred ninety-one".