11111111109902 has 16 divisors (see below), whose sum is σ = 16672892515200. Its totient is φ = 5553480551520.

The previous prime is 11111111109881. The next prime is 11111111109911. The reversal of 11111111109902 is 20990111111111.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89847752 + ... + 89971332.

It is an arithmetic number, because the mean of its divisors is an integer number (1042055782200).

Almost surely, 2^{11111111109902} is an apocalyptic number.

11111111109902 is a deficient number, since it is larger than the sum of its proper divisors (5561781405298).

11111111109902 is a wasteful number, since it uses less digits than its factorization.

11111111109902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140011.

The product of its (nonzero) digits is 162, while the sum is 29.

The spelling of 11111111109902 in words is "eleven trillion, one hundred eleven billion, one hundred eleven million, one hundred nine thousand, nine hundred two".