2101201117 has 2 divisors, whose sum is σ = 2101201118. Its totient is φ = 2101201116.

The previous prime is 2101201097. The next prime is 2101201147. The reversal of 2101201117 is 7111021012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2077445241 + 23755876 = 45579^2 + 4874^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2101201117 is a prime.

It is a super-2 number, since 2×2101201117² = 8830092268164095378, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2101201117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2101201147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050600558 + 1050600559.

It is an arithmetic number, because the mean of its divisors is an integer number (1050600559).

Almost surely, 2^2101201117 is an apocalyptic number.

It is an amenable number.

2101201117 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101201117 is an equidigital number, since it uses as much as digits as its factorization.

2101201117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28, while the sum is 16.

The square root of 2101201117 is about 45838.8603370546. The cubic root of 2101201117 is about 1280.8232653445.

Adding to 2101201117 its reverse (7111021012), we get a palindrome (9212222129).

The spelling of 2101201117 in words is "two billion, one hundred one million, two hundred one thousand, one hundred seventeen".