2223223121 has 8 divisors (see below), whose sum is σ = 2545234560. Its totient is φ = 1902313728.

The previous prime is 2223223111. The next prime is 2223223147. The reversal of 2223223121 is 1213223222.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2223223121 - 2¹⁸ = 2222960977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2223223093 and 2223223102.

It is not an unprimeable number, because it can be changed into a prime (2223223111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271181 + ... + 279258.

It is an arithmetic number, because the mean of its divisors is an integer number (318154320).

Almost surely, 2^2223223121 is an apocalyptic number.

It is an amenable number.

2223223121 is a deficient number, since it is larger than the sum of its proper divisors (322011439).

2223223121 is an equidigital number, since it uses as much as digits as its factorization.

2223223121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551023.

The product of its digits is 576, while the sum is 20.

The square root of 2223223121 is about 47151.0670186794. The cubic root of 2223223121 is about 1305.1517702945.

Adding to 2223223121 its reverse (1213223222), we get a palindrome (3436446343).

The spelling of 2223223121 in words is "two billion, two hundred twenty-three million, two hundred twenty-three thousand, one hundred twenty-one".