2221401243 has 32 divisors (see below), whose sum is σ = 3057315840. Its totient is φ = 1434101760.

The previous prime is 2221401241. The next prime is 2221401269. The reversal of 2221401243 is 3421041222.

2221401243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2221401243 - 2¹ = 2221401241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2221401241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5861028 + ... + 5861406.

It is an arithmetic number, because the mean of its divisors is an integer number (95541120).

Almost surely, 2^2221401243 is an apocalyptic number.

2221401243 is a deficient number, since it is larger than the sum of its proper divisors (835914597).

2221401243 is a wasteful number, since it uses less digits than its factorization.

2221401243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 2221401243 is about 47131.7434750721. The cubic root of 2221401243 is about 1304.7951593461.

Adding to 2221401243 its reverse (3421041222), we get a palindrome (5642442465).

The spelling of 2221401243 in words is "two billion, two hundred twenty-one million, four hundred one thousand, two hundred forty-three".