2221023243 has 4 divisors (see below), whose sum is σ = 2961364328. Its totient is φ = 1480682160.

The previous prime is 2221023227. The next prime is 2221023251. The reversal of 2221023243 is 3423201222.

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

It is not a de Polignac number, because 2221023243 - 2⁴ = 2221023227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221023263) 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, 370170538 + ... + 370170543.

It is an arithmetic number, because the mean of its divisors is an integer number (740341082).

Almost surely, 2^2221023243 is an apocalyptic number.

2221023243 is a deficient number, since it is larger than the sum of its proper divisors (740341085).

2221023243 is an equidigital number, since it uses as much as digits as its factorization.

2221023243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740341084.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 2221023243 is about 47127.7332682148. The cubic root of 2221023243 is about 1304.7211459203.

Adding to 2221023243 its reverse (3423201222), we get a palindrome (5644224465).

The spelling of 2221023243 in words is "two billion, two hundred twenty-one million, twenty-three thousand, two hundred forty-three".