100002202120091 has 2 divisors, whose sum is σ = 100002202120092. Its totient is φ = 100002202120090.

The previous prime is 100002202120081. The next prime is 100002202120111. The reversal of 100002202120091 is 190021202200001.

It is a happy number.

It is an a-pointer prime, because the next prime (100002202120111) can be obtained adding 100002202120091 to its sum of digits (20).

It is a weak prime.

It is an emirp because it is prime and its reverse (190021202200001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100002202120091 - 2¹⁰ = 100002202119067 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (100002202120001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50001101060045 + 50001101060046.

It is an arithmetic number, because the mean of its divisors is an integer number (50001101060046).

Almost surely, 2^{100002202120091} is an apocalyptic number.

100002202120091 is a deficient number, since it is larger than the sum of its proper divisors (1).

100002202120091 is an equidigital number, since it uses as much as digits as its factorization.

100002202120091 is an evil number, because the sum of its binary digits is even.

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

Adding to 100002202120091 its reverse (190021202200001), we get a palindrome (290023404320092).

The spelling of 100002202120091 in words is "one hundred trillion, two billion, two hundred two million, one hundred twenty thousand, ninety-one".