9999990203102 has 4 divisors (see below), whose sum is σ = 14999985304656. Its totient is φ = 4999995101550.

The previous prime is 9999990203069. The next prime is 9999990203111. The reversal of 9999990203102 is 2013020999999.

9999990203102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2499997550774 + ... + 2499997550777.

It is an arithmetic number, because the mean of its divisors is an integer number (3749996326164).

Almost surely, 2^{9999990203102} is an apocalyptic number.

9999990203102 is a deficient number, since it is larger than the sum of its proper divisors (4999995101554).

9999990203102 is a wasteful number, since it uses less digits than its factorization.

9999990203102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4999995101553.

The product of its (nonzero) digits is 6377292, while the sum is 62.

The spelling of 9999990203102 in words is "nine trillion, nine hundred ninety-nine billion, nine hundred ninety million, two hundred three thousand, one hundred two".