2223212331 has 8 divisors (see below), whose sum is σ = 3036582864. Its totient is φ = 1445991680.

The previous prime is 2223212323. The next prime is 2223212347. The reversal of 2223212331 is 1332123222.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2223212331 - 2³ = 2223212323 is a prime.

It is a super-2 number, since 2×2223212331² = 9885346137420907122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2223212298 and 2223212307.

It is not an unprimeable number, because it can be changed into a prime (2223212311) 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 7 ways as a sum of consecutive naturals, for example, 9037326 + ... + 9037571.

It is an arithmetic number, because the mean of its divisors is an integer number (379572858).

Almost surely, 2^2223212331 is an apocalyptic number.

2223212331 is a deficient number, since it is larger than the sum of its proper divisors (813370533).

2223212331 is a wasteful number, since it uses less digits than its factorization.

2223212331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18074941.

The product of its digits is 864, while the sum is 21.

The square root of 2223212331 is about 47150.9525990727. The cubic root of 2223212331 is about 1305.1496588540.

Adding to 2223212331 its reverse (1332123222), we get a palindrome (3555335553).

The spelling of 2223212331 in words is "two billion, two hundred twenty-three million, two hundred twelve thousand, three hundred thirty-one".