122012001091 has 2 divisors, whose sum is σ = 122012001092. Its totient is φ = 122012001090.

The previous prime is 122012001043. The next prime is 122012001103. The reversal of 122012001091 is 190100210221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122012001091 - 2¹⁹ = 122011476803 is a prime.

It is not a weakly prime, because it can be changed into another prime (122012061091) 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, 61006000545 + 61006000546.

It is an arithmetic number, because the mean of its divisors is an integer number (61006000546).

Almost surely, 2^122012001091 is an apocalyptic number.

122012001091 is a deficient number, since it is larger than the sum of its proper divisors (1).

122012001091 is an equidigital number, since it uses as much as digits as its factorization.

122012001091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 122012001091 in words is "one hundred twenty-two billion, twelve million, one thousand, ninety-one".