212011001010091 has 2 divisors, whose sum is σ = 212011001010092. Its totient is φ = 212011001010090.

The previous prime is 212011001010089. The next prime is 212011001010097. The reversal of 212011001010091 is 190010100110212.

212011001010091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212011001010091 - 2¹ = 212011001010089 is a prime.

Together with 212011001010089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (212011001010097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106005500505045 + 106005500505046.

It is an arithmetic number, because the mean of its divisors is an integer number (106005500505046).

Almost surely, 2^{212011001010091} is an apocalyptic number.

212011001010091 is a deficient number, since it is larger than the sum of its proper divisors (1).

212011001010091 is an equidigital number, since it uses as much as digits as its factorization.

212011001010091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 19.

The spelling of 212011001010091 in words is "two hundred twelve trillion, eleven billion, one million, ten thousand, ninety-one".