212001011112091 has 2 divisors, whose sum is σ = 212001011112092. Its totient is φ = 212001011112090.

The previous prime is 212001011112031. The next prime is 212001011112103. The reversal of 212001011112091 is 190211110100212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212001011112091 - 2⁷ = 212001011111963 is a prime.

It is not a weakly prime, because it can be changed into another prime (212001011112031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106000505556045 + 106000505556046.

It is an arithmetic number, because the mean of its divisors is an integer number (106000505556046).

Almost surely, 2^{212001011112091} is an apocalyptic number.

212001011112091 is a deficient number, since it is larger than the sum of its proper divisors (1).

212001011112091 is an equidigital number, since it uses as much as digits as its factorization.

212001011112091 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 22.

The spelling of 212001011112091 in words is "two hundred twelve trillion, one billion, eleven million, one hundred twelve thousand, ninety-one".