2101663106 has 8 divisors (see below), whose sum is σ = 3164214780. Its totient is φ = 1046924848.

The previous prime is 2101663033. The next prime is 2101663133. The reversal of 2101663106 is 6013661012.

It can be written as a sum of positive squares in 2 ways, for example, as 1855455625 + 246207481 = 43075^2 + 15691^2 .

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

It is a super-2 number, since 2×2101663106² = 8833975622243134472, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1952681 + ... + 1953756.

Almost surely, 2^2101663106 is an apocalyptic number.

2101663106 is a deficient number, since it is larger than the sum of its proper divisors (1062551674).

2101663106 is a wasteful number, since it uses less digits than its factorization.

2101663106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3906708.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 2101663106 is about 45843.8993324085. The cubic root of 2101663106 is about 1280.9171295781.

The spelling of 2101663106 in words is "two billion, one hundred one million, six hundred sixty-three thousand, one hundred six".