99121013203 has 4 divisors (see below), whose sum is σ = 99126636328. Its totient is φ = 99115390080.

The previous prime is 99121013197. The next prime is 99121013231. The reversal of 99121013203 is 30231012199.

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

It is a cyclic number.

It is not a de Polignac number, because 99121013203 - 2⁹ = 99121012691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99121013273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2785038 + ... + 2820403.

It is an arithmetic number, because the mean of its divisors is an integer number (24781659082).

Almost surely, 2^99121013203 is an apocalyptic number.

99121013203 is a deficient number, since it is larger than the sum of its proper divisors (5623125).

99121013203 is a wasteful number, since it uses less digits than its factorization.

99121013203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5623124.

The product of its (nonzero) digits is 2916, while the sum is 31.

The spelling of 99121013203 in words is "ninety-nine billion, one hundred twenty-one million, thirteen thousand, two hundred three".