2100066101 has 4 divisors (see below), whose sum is σ = 2400075552. Its totient is φ = 1800056652.

The previous prime is 2100066097. The next prime is 2100066103. The reversal of 2100066101 is 1016600012.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2100066101 - 2² = 2100066097 is a prime.

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 2100066101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100066103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150004715 + ... + 150004728.

It is an arithmetic number, because the mean of its divisors is an integer number (600018888).

Almost surely, 2^2100066101 is an apocalyptic number.

It is an amenable number.

2100066101 is a deficient number, since it is larger than the sum of its proper divisors (300009451).

2100066101 is an equidigital number, since it uses as much as digits as its factorization.

2100066101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300009450.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 2100066101 is about 45826.4781649212. The cubic root of 2100066101 is about 1280.5926009677.

Adding to 2100066101 its reverse (1016600012), we get a palindrome (3116666113).

The spelling of 2100066101 in words is "two billion, one hundred million, sixty-six thousand, one hundred one".