2102302221 has 4 divisors (see below), whose sum is σ = 2803069632. Its totient is φ = 1401534812.

The previous prime is 2102302217. The next prime is 2102302289. The reversal of 2102302221 is 1222032012.

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 2102302221 - 2² = 2102302217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2102302221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102302201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350383701 + ... + 350383706.

It is an arithmetic number, because the mean of its divisors is an integer number (700767408).

Almost surely, 2^2102302221 is an apocalyptic number.

It is an amenable number.

2102302221 is a deficient number, since it is larger than the sum of its proper divisors (700767411).

2102302221 is an equidigital number, since it uses as much as digits as its factorization.

2102302221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700767410.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2102302221 is about 45850.8693592608. The cubic root of 2102302221 is about 1281.0469585659.

Adding to 2102302221 its reverse (1222032012), we get a palindrome (3324334233).

The spelling of 2102302221 in words is "two billion, one hundred two million, three hundred two thousand, two hundred twenty-one".