212010201100091 has 2 divisors, whose sum is σ = 212010201100092. Its totient is φ = 212010201100090.

The previous prime is 212010201100079. The next prime is 212010201100099. The reversal of 212010201100091 is 190001102010212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212010201100091 - 2³⁰ = 212009127358267 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (212010201100099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106005100550045 + 106005100550046.

It is an arithmetic number, because the mean of its divisors is an integer number (106005100550046).

Almost surely, 2^{212010201100091} is an apocalyptic number.

212010201100091 is a deficient number, since it is larger than the sum of its proper divisors (1).

212010201100091 is an equidigital number, since it uses as much as digits as its factorization.

212010201100091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 212010201100091 in words is "two hundred twelve trillion, ten billion, two hundred one million, one hundred thousand, ninety-one".