102111099989243 has 2 divisors, whose sum is σ = 102111099989244. Its totient is φ = 102111099989242.

The previous prime is 102111099989231. The next prime is 102111099989273. The reversal of 102111099989243 is 342989990111201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102111099989243 is a prime.

It is not a weakly prime, because it can be changed into another prime (102111099989273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51055549994621 + 51055549994622.

It is an arithmetic number, because the mean of its divisors is an integer number (51055549994622).

Almost surely, 2^{102111099989243} is an apocalyptic number.

102111099989243 is a deficient number, since it is larger than the sum of its proper divisors (1).

102111099989243 is an equidigital number, since it uses as much as digits as its factorization.

102111099989243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2519424, while the sum is 59.

The spelling of 102111099989243 in words is "one hundred two trillion, one hundred eleven billion, ninety-nine million, nine hundred eighty-nine thousand, two hundred forty-three".