102210121002191 has 2 divisors, whose sum is σ = 102210121002192. Its totient is φ = 102210121002190.

The previous prime is 102210121001971. The next prime is 102210121002203. The reversal of 102210121002191 is 191200121012201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102210121002191 is a prime.

It is a super-3 number, since 3×102210121002191³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102210121202191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51105060501095 + 51105060501096.

It is an arithmetic number, because the mean of its divisors is an integer number (51105060501096).

Almost surely, 2^{102210121002191} is an apocalyptic number.

102210121002191 is a deficient number, since it is larger than the sum of its proper divisors (1).

102210121002191 is an equidigital number, since it uses as much as digits as its factorization.

102210121002191 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 23.

Adding to 102210121002191 its reverse (191200121012201), we get a palindrome (293410242014392).

The spelling of 102210121002191 in words is "one hundred two trillion, two hundred ten billion, one hundred twenty-one million, two thousand, one hundred ninety-one".