2120010091 has 2 divisors, whose sum is σ = 2120010092. Its totient is φ = 2120010090.

The previous prime is 2120010077. The next prime is 2120010107. The reversal of 2120010091 is 1900100212.

It is an a-pointer prime, because the next prime (2120010107) can be obtained adding 2120010091 to its sum of digits (16).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120010091 is a prime.

It is not a weakly prime, because it can be changed into another prime (2120010031) 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, 1060005045 + 1060005046.

It is an arithmetic number, because the mean of its divisors is an integer number (1060005046).

Almost surely, 2^2120010091 is an apocalyptic number.

2120010091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120010091 is an equidigital number, since it uses as much as digits as its factorization.

2120010091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 2120010091 is about 46043.5673140125. The cubic root of 2120010091 is about 1284.6336959511.

The spelling of 2120010091 in words is "two billion, one hundred twenty million, ten thousand, ninety-one".