2166646213100 has 18 divisors (see below), whose sum is σ = 4701622282644. Its totient is φ = 866658485200.

The previous prime is 2166646213093. The next prime is 2166646213117. The reversal of 2166646213100 is 13126466612.

It is a super-2 number, since 2×2166646213100² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10833230966 + ... + 10833231165.

Almost surely, 2^{2166646213100} is an apocalyptic number.

2166646213100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2166646213100 is an abundant number, since it is smaller than the sum of its proper divisors (2534976069544).

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

2166646213100 is a wasteful number, since it uses less digits than its factorization.

2166646213100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21666462145 (or 21666462138 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The spelling of 2166646213100 in words is "two trillion, one hundred sixty-six billion, six hundred forty-six million, two hundred thirteen thousand, one hundred".