2221023245 has 12 divisors (see below), whose sum is σ = 3100367484. Its totient is φ = 1522987200.

The previous prime is 2221023227. The next prime is 2221023251. The reversal of 2221023245 is 5423201222.

It can be written as a sum of positive squares in 2 ways, for example, as 393546244 + 1827477001 = 19838^2 + 42749^2 .

It is not a de Polignac number, because 2221023245 - 2⁸ = 2221022989 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2221023245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4532456 + ... + 4532945.

It is an arithmetic number, because the mean of its divisors is an integer number (258363957).

Almost surely, 2^2221023245 is an apocalyptic number.

It is an amenable number.

2221023245 is a deficient number, since it is larger than the sum of its proper divisors (879344239).

2221023245 is an equidigital number, since it uses as much as digits as its factorization.

2221023245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9065420 (or 9065413 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 2221023245 is about 47127.7332894337. The cubic root of 2221023245 is about 1304.7211463119.

Adding to 2221023245 its reverse (5423201222), we get a palindrome (7644224467).

The spelling of 2221023245 in words is "two billion, two hundred twenty-one million, twenty-three thousand, two hundred forty-five".