102120212201999 has 4 divisors (see below), whose sum is σ = 102125306261664. Its totient is φ = 102115118142336.

The previous prime is 102120212201963. The next prime is 102120212202013. The reversal of 102120212201999 is 999102212021201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102120212201999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102120212221999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2546999762 + ... + 2547039855.

It is an arithmetic number, because the mean of its divisors is an integer number (25531326565416).

Almost surely, 2^{102120212201999} is an apocalyptic number.

102120212201999 is a deficient number, since it is larger than the sum of its proper divisors (5094059665).

102120212201999 is an equidigital number, since it uses as much as digits as its factorization.

102120212201999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5094059664.

The product of its (nonzero) digits is 23328, while the sum is 41.

The spelling of 102120212201999 in words is "one hundred two trillion, one hundred twenty billion, two hundred twelve million, two hundred one thousand, nine hundred ninety-nine".