102203999 has 2 divisors, whose sum is σ = 102204000. Its totient is φ = 102203998.

The previous prime is 102203977. The next prime is 102204001. The reversal of 102203999 is 999302201.

It is a strong prime.

It is an emirp because it is prime and its reverse (999302201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102203999 is a prime.

It is a Sophie Germain prime.

Together with 102204001, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102203599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51101999 + 51102000.

It is an arithmetic number, because the mean of its divisors is an integer number (51102000).

Almost surely, 2^102203999 is an apocalyptic number.

102203999 is a deficient number, since it is larger than the sum of its proper divisors (1).

102203999 is an equidigital number, since it uses as much as digits as its factorization.

102203999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 102203999 is about 10109.5993491335. The cubic root of 102203999 is about 467.5441524639.

The spelling of 102203999 in words is "one hundred two million, two hundred three thousand, nine hundred ninety-nine".