2105216116 has 6 divisors (see below), whose sum is σ = 3684128210. Its totient is φ = 1052608056.

The previous prime is 2105215991. The next prime is 2105216129. The reversal of 2105216116 is 6116125012.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2020502500 + 84713616 = 44950^2 + 9204^2 .

It is a super-2 number, since 2×2105216116² = 8863869790132250912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263152011 + ... + 263152018.

Almost surely, 2^2105216116 is an apocalyptic number.

It is an amenable number.

2105216116 is a deficient number, since it is larger than the sum of its proper divisors (1578912094).

2105216116 is a wasteful number, since it uses less digits than its factorization.

2105216116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526304033 (or 526304031 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 2105216116 is about 45882.6341440855. The cubic root of 2105216116 is about 1281.6385501688.

The spelling of 2105216116 in words is "two billion, one hundred five million, two hundred sixteen thousand, one hundred sixteen".