1233222213 has 4 divisors (see below), whose sum is σ = 1644296288. Its totient is φ = 822148140.

The previous prime is 1233222139. The next prime is 1233222229. The reversal of 1233222213 is 3122223321.

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 not a de Polignac number, because 1233222213 - 2²² = 1229027909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1233222213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233229213) 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, 205537033 + ... + 205537038.

It is an arithmetic number, because the mean of its divisors is an integer number (411074072).

Almost surely, 2^1233222213 is an apocalyptic number.

It is an amenable number.

1233222213 is a deficient number, since it is larger than the sum of its proper divisors (411074075).

1233222213 is an equidigital number, since it uses as much as digits as its factorization.

1233222213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411074074.

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

The square root of 1233222213 is about 35117.2637459128. The cubic root of 1233222213 is about 1072.3760668787.

Adding to 1233222213 its reverse (3122223321), we get a palindrome (4355445534).

It can be divided in two parts, 1233 and 222213, that added together give a triangular number (223446 = T₆₆₈).

The spelling of 1233222213 in words is "one billion, two hundred thirty-three million, two hundred twenty-two thousand, two hundred thirteen".