2223442221 has 64 divisors (see below), whose sum is σ = 4088211456. Its totient is φ = 1037318400.

The previous prime is 2223442153. The next prime is 2223442229. The reversal of 2223442221 is 1222443222.

It is not a de Polignac number, because 2223442221 - 2¹⁴ = 2223425837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2223442191 and 2223442200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2223442229) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 101106 + ... + 121116.

It is an arithmetic number, because the mean of its divisors is an integer number (63878304).

Almost surely, 2^2223442221 is an apocalyptic number.

2223442221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2223442221 is a deficient number, since it is larger than the sum of its proper divisors (1864769235).

2223442221 is a wasteful number, since it uses less digits than its factorization.

2223442221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20082.

The product of its digits is 3072, while the sum is 24.

The square root of 2223442221 is about 47153.3903447037. The cubic root of 2223442221 is about 1305.1946433882.

Adding to 2223442221 its reverse (1222443222), we get a palindrome (3445885443).

It can be divided in two parts, 2223 and 442221, that added together give a palindrome (444444).

The spelling of 2223442221 in words is "two billion, two hundred twenty-three million, four hundred forty-two thousand, two hundred twenty-one".