102120100212191 has 2 divisors, whose sum is σ = 102120100212192. Its totient is φ = 102120100212190.

The previous prime is 102120100212161. The next prime is 102120100212259. The reversal of 102120100212191 is 191212001021201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102120100212191 - 2¹⁴ = 102120100195807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102120100212101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51060050106095 + 51060050106096.

It is an arithmetic number, because the mean of its divisors is an integer number (51060050106096).

Almost surely, 2^{102120100212191} is an apocalyptic number.

102120100212191 is a deficient number, since it is larger than the sum of its proper divisors (1).

102120100212191 is an equidigital number, since it uses as much as digits as its factorization.

102120100212191 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 23.

Adding to 102120100212191 its reverse (191212001021201), we get a palindrome (293332101233392).

The spelling of 102120100212191 in words is "one hundred two trillion, one hundred twenty billion, one hundred million, two hundred twelve thousand, one hundred ninety-one".