2222400445 has 4 divisors (see below), whose sum is σ = 2666880540. Its totient is φ = 1777920352.

The previous prime is 2222400443. The next prime is 2222400451. The reversal of 2222400445 is 5440042222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5440042222 = 2 ⋅2720021111.

It can be written as a sum of positive squares in 2 ways, for example, as 453945636 + 1768454809 = 21306^2 + 42053^2 .

It is a cyclic number.

It is not a de Polignac number, because 2222400445 - 2¹ = 2222400443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222400443) 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, 222240040 + ... + 222240049.

It is an arithmetic number, because the mean of its divisors is an integer number (666720135).

Almost surely, 2^2222400445 is an apocalyptic number.

It is an amenable number.

2222400445 is a deficient number, since it is larger than the sum of its proper divisors (444480095).

2222400445 is an equidigital number, since it uses as much as digits as its factorization.

2222400445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444480094.

The product of its (nonzero) digits is 5120, while the sum is 25.

The square root of 2222400445 is about 47142.3423792242. The cubic root of 2222400445 is about 1304.9907653863.

Adding to 2222400445 its reverse (5440042222), we get a palindrome (7662442667).

The spelling of 2222400445 in words is "two billion, two hundred twenty-two million, four hundred thousand, four hundred forty-five".