2101009986 has 48 divisors (see below), whose sum is σ = 4732928928. Its totient is φ = 673041600.

The previous prime is 2101009973. The next prime is 2101009993. The reversal of 2101009986 is 6899001012.

It is a super-2 number, since 2×2101009986² = 8828485922543440392, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2101009986.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28201 + ... + 70691.

It is an arithmetic number, because the mean of its divisors is an integer number (98602686).

Almost surely, 2^2101009986 is an apocalyptic number.

2101009986 is an abundant number, since it is smaller than the sum of its proper divisors (2631918942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2101009986 is a wasteful number, since it uses less digits than its factorization.

2101009986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42607 (or 42604 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 2101009986 is about 45836.7754755938. The cubic root of 2101009986 is about 1280.7844284379.

The spelling of 2101009986 in words is "two billion, one hundred one million, nine thousand, nine hundred eighty-six".