102002202091 has 2 divisors, whose sum is σ = 102002202092. Its totient is φ = 102002202090.

The previous prime is 102002202083. The next prime is 102002202143. The reversal of 102002202091 is 190202200201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102002202091 - 2³ = 102002202083 is a prime.

It is not a weakly prime, because it can be changed into another prime (102002202011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51001101045 + 51001101046.

It is an arithmetic number, because the mean of its divisors is an integer number (51001101046).

Almost surely, 2^102002202091 is an apocalyptic number.

102002202091 is a deficient number, since it is larger than the sum of its proper divisors (1).

102002202091 is an equidigital number, since it uses as much as digits as its factorization.

102002202091 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 19.

Adding to 102002202091 its reverse (190202200201), we get a palindrome (292204402292).

The spelling of 102002202091 in words is "one hundred two billion, two million, two hundred two thousand, ninety-one".