111111110999890 has 8 divisors (see below), whose sum is σ = 199999999799820. Its totient is φ = 44444444399952.

The previous prime is 111111110999873. The next prime is 111111110999891. The reversal of 111111110999890 is 98999011111111.

111111110999890 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 107888917267681 + 3222193732209 = 10386959^2 + 1795047^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (111111110999891) 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, 5555555549985 + ... + 5555555550004.

Almost surely, 2^{111111110999890} is an apocalyptic number.

111111110999890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111111110999890 is a deficient number, since it is larger than the sum of its proper divisors (88888888799930).

111111110999890 is a wasteful number, since it uses less digits than its factorization.

111111110999890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11111111099996.

The product of its (nonzero) digits is 52488, while the sum is 52.

The spelling of 111111110999890 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred ten million, nine hundred ninety-nine thousand, eight hundred ninety".