102020211213191 has 2 divisors, whose sum is σ = 102020211213192. Its totient is φ = 102020211213190.

The previous prime is 102020211213187. The next prime is 102020211213209. The reversal of 102020211213191 is 191312112020201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102020211213191 - 2² = 102020211213187 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102020211213191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102020211213101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51010105606595 + 51010105606596.

It is an arithmetic number, because the mean of its divisors is an integer number (51010105606596).

Almost surely, 2^{102020211213191} is an apocalyptic number.

102020211213191 is a deficient number, since it is larger than the sum of its proper divisors (1).

102020211213191 is an equidigital number, since it uses as much as digits as its factorization.

102020211213191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 26.

Adding to 102020211213191 its reverse (191312112020201), we get a palindrome (293332323233392).

The spelling of 102020211213191 in words is "one hundred two trillion, twenty billion, two hundred eleven million, two hundred thirteen thousand, one hundred ninety-one".