1221223333 has 8 divisors (see below), whose sum is σ = 1333632960. Its totient is φ = 1109045280.

The previous prime is 1221223327. The next prime is 1221223357. The reversal of 1221223333 is 3333221221.

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 1221223333 - 2⁵ = 1221223301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221223303) 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, 46768 + ... + 68041.

It is an arithmetic number, because the mean of its divisors is an integer number (166704120).

Almost surely, 2^1221223333 is an apocalyptic number.

It is an amenable number.

1221223333 is a deficient number, since it is larger than the sum of its proper divisors (112409627).

1221223333 is a wasteful number, since it uses less digits than its factorization.

1221223333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115787.

The product of its digits is 1296, while the sum is 22.

The square root of 1221223333 is about 34946.0059663476. The cubic root of 1221223333 is about 1068.8867604797.

Adding to 1221223333 its reverse (3333221221), we get a palindrome (4554444554).

The spelling of 1221223333 in words is "one billion, two hundred twenty-one million, two hundred twenty-three thousand, three hundred thirty-three".