1201222002091 has 2 divisors, whose sum is σ = 1201222002092. Its totient is φ = 1201222002090.

The previous prime is 1201222002011. The next prime is 1201222002199. The reversal of 1201222002091 is 1902002221021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1201222002091 - 2²¹ = 1201219904939 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201222002011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600611001045 + 600611001046.

It is an arithmetic number, because the mean of its divisors is an integer number (600611001046).

Almost surely, 2^{1201222002091} is an apocalyptic number.

1201222002091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201222002091 is an equidigital number, since it uses as much as digits as its factorization.

1201222002091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 1201222002091 in words is "one trillion, two hundred one billion, two hundred twenty-two million, two thousand, ninety-one".