2099111987 has 8 divisors (see below), whose sum is σ = 2422738272. Its totient is φ = 1781424000.

The previous prime is 2099111981. The next prime is 2099111999. The reversal of 2099111987 is 7891119902.

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

It is a cyclic number.

It is not a de Polignac number, because 2099111987 - 2¹⁰ = 2099110963 is a prime.

It is a super-2 number, since 2×2099111987² = 8812542267934176338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2099111981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1483814 + ... + 1485227.

It is an arithmetic number, because the mean of its divisors is an integer number (302842284).

Almost surely, 2^2099111987 is an apocalyptic number.

2099111987 is a deficient number, since it is larger than the sum of its proper divisors (323626285).

2099111987 is a wasteful number, since it uses less digits than its factorization.

2099111987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2969149.

The product of its (nonzero) digits is 81648, while the sum is 47.

The square root of 2099111987 is about 45816.0669088913. The cubic root of 2099111987 is about 1280.3986362140.

The spelling of 2099111987 in words is "two billion, ninety-nine million, one hundred eleven thousand, nine hundred eighty-seven".