2099128911902 has 32 divisors (see below), whose sum is σ = 3507408536544. Its totient is φ = 934209676800.

The previous prime is 2099128911853. The next prime is 2099128911961. The reversal of 2099128911902 is 2091198219902.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4550249 + ... + 4990292.

It is an arithmetic number, because the mean of its divisors is an integer number (109606516767).

Almost surely, 2^{2099128911902} is an apocalyptic number.

2099128911902 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2099128911902 is a deficient number, since it is larger than the sum of its proper divisors (1408279624642).

2099128911902 is a wasteful number, since it uses less digits than its factorization.

2099128911902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9540764.

The product of its (nonzero) digits is 419904, while the sum is 53.

The spelling of 2099128911902 in words is "two trillion, ninety-nine billion, one hundred twenty-eight million, nine hundred eleven thousand, nine hundred two".