2223642221 has 4 divisors (see below), whose sum is σ = 2244424032. Its totient is φ = 2202860412.

The previous prime is 2223642199. The next prime is 2223642263. The reversal of 2223642221 is 1222463222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2223642221 - 2²² = 2219447917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2223642271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10390745 + ... + 10390958.

It is an arithmetic number, because the mean of its divisors is an integer number (561106008).

Almost surely, 2^2223642221 is an apocalyptic number.

It is an amenable number.

2223642221 is a deficient number, since it is larger than the sum of its proper divisors (20781811).

2223642221 is a wasteful number, since it uses less digits than its factorization.

2223642221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20781810.

The product of its digits is 4608, while the sum is 26.

The square root of 2223642221 is about 47155.5110352968. The cubic root of 2223642221 is about 1305.2337765695.

The spelling of 2223642221 in words is "two billion, two hundred twenty-three million, six hundred forty-two thousand, two hundred twenty-one".