111199001890 has 8 divisors (see below), whose sum is σ = 200158203420. Its totient is φ = 44479600752.

The previous prime is 111199001867. The next prime is 111199001891. The reversal of 111199001890 is 98100991111.

It can be written as a sum of positive squares in 2 ways, for example, as 97825698441 + 13373303449 = 312771^2 + 115643^2 .

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 (111199001891) 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, 5559950085 + ... + 5559950104.

Almost surely, 2^111199001890 is an apocalyptic number.

111199001890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111199001890 is a deficient number, since it is larger than the sum of its proper divisors (88959201530).

111199001890 is a wasteful number, since it uses less digits than its factorization.

111199001890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11119900196.

The product of its (nonzero) digits is 5832, while the sum is 40.

The spelling of 111199001890 in words is "one hundred eleven billion, one hundred ninety-nine million, one thousand, eight hundred ninety".