2223213145 has 4 divisors (see below), whose sum is σ = 2667855780. Its totient is φ = 1778570512.

The previous prime is 2223213107. The next prime is 2223213193. The reversal of 2223213145 is 5413123222.

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

It can be written as a sum of positive squares in 2 ways, for example, as 345550921 + 1877662224 = 18589^2 + 43332^2 .

It is a cyclic number.

It is not a de Polignac number, because 2223213145 - 2¹⁷ = 2223082073 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222321310 + ... + 222321319.

It is an arithmetic number, because the mean of its divisors is an integer number (666963945).

Almost surely, 2^2223213145 is an apocalyptic number.

It is an amenable number.

2223213145 is a deficient number, since it is larger than the sum of its proper divisors (444642635).

2223213145 is an equidigital number, since it uses as much as digits as its factorization.

2223213145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444642634.

The product of its digits is 2880, while the sum is 25.

The square root of 2223213145 is about 47150.9612309230. The cubic root of 2223213145 is about 1305.1498181418.

Adding to 2223213145 its reverse (5413123222), we get a palindrome (7636336367).

The spelling of 2223213145 in words is "two billion, two hundred twenty-three million, two hundred thirteen thousand, one hundred forty-five".