21330132300091 has 2 divisors, whose sum is σ = 21330132300092. Its totient is φ = 21330132300090.

The previous prime is 21330132299981. The next prime is 21330132300149. The reversal of 21330132300091 is 19000323103312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21330132300091 - 2²¹ = 21330130202939 is a prime.

It is not a weakly prime, because it can be changed into another prime (21330132300691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10665066150045 + 10665066150046.

It is an arithmetic number, because the mean of its divisors is an integer number (10665066150046).

Almost surely, 2^{21330132300091} is an apocalyptic number.

21330132300091 is a deficient number, since it is larger than the sum of its proper divisors (1).

21330132300091 is an equidigital number, since it uses as much as digits as its factorization.

21330132300091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 28.

The spelling of 21330132300091 in words is "twenty-one trillion, three hundred thirty billion, one hundred thirty-two million, three hundred thousand, ninety-one".