2122210001 has 4 divisors (see below), whose sum is σ = 2122502052. Its totient is φ = 2121917952.

The previous prime is 2122209989. The next prime is 2122210007. The reversal of 2122210001 is 1000122212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 399960001 + 1722250000 = 19999^2 + 41500^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2122210001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2122210007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134840 + ... + 149753.

It is an arithmetic number, because the mean of its divisors is an integer number (530625513).

Almost surely, 2^2122210001 is an apocalyptic number.

It is an amenable number.

2122210001 is a deficient number, since it is larger than the sum of its proper divisors (292051).

2122210001 is an equidigital number, since it uses as much as digits as its factorization.

2122210001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292050.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2122210001 is about 46067.4505589359. The cubic root of 2122210001 is about 1285.0778921933.

Adding to 2122210001 its reverse (1000122212), we get a palindrome (3122332213).

The spelling of 2122210001 in words is "two billion, one hundred twenty-two million, two hundred ten thousand, one".