1202202100091 has 2 divisors, whose sum is σ = 1202202100092. Its totient is φ = 1202202100090.

The previous prime is 1202202100067. The next prime is 1202202100111. The reversal of 1202202100091 is 1900012022021.

It is a happy number.

It is an a-pointer prime, because the next prime (1202202100111) can be obtained adding 1202202100091 to its sum of digits (20).

It is a strong prime.

It is an emirp because it is prime and its reverse (1900012022021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1202202100091 - 2¹⁰ = 1202202099067 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1202202000091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601101050045 + 601101050046.

It is an arithmetic number, because the mean of its divisors is an integer number (601101050046).

Almost surely, 2^{1202202100091} is an apocalyptic number.

1202202100091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202202100091 is an equidigital number, since it uses as much as digits as its factorization.

1202202100091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 1202202100091 in words is "one trillion, two hundred two billion, two hundred two million, one hundred thousand, ninety-one".