2212001020991 has 2 divisors, whose sum is σ = 2212001020992. Its totient is φ = 2212001020990.

The previous prime is 2212001020981. The next prime is 2212001021029. The reversal of 2212001020991 is 1990201002122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2212001020991 - 2²² = 2211996826687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2212001020951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1106000510495 + 1106000510496.

It is an arithmetic number, because the mean of its divisors is an integer number (1106000510496).

Almost surely, 2^{2212001020991} is an apocalyptic number.

2212001020991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2212001020991 is an equidigital number, since it uses as much as digits as its factorization.

2212001020991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 29.

The spelling of 2212001020991 in words is "two trillion, two hundred twelve billion, one million, twenty thousand, nine hundred ninety-one".