1233322221 has 16 divisors (see below), whose sum is σ = 1699012224. Its totient is φ = 795190464.

The previous prime is 1233322213. The next prime is 1233322231. The reversal of 1233322221 is 1222233321.

It is a happy number.

It is not a de Polignac number, because 1233322221 - 2³ = 1233322213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233322231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14730 + ... + 51803.

It is an arithmetic number, because the mean of its divisors is an integer number (106188264).

Almost surely, 2^1233322221 is an apocalyptic number.

It is an amenable number.

1233322221 is a deficient number, since it is larger than the sum of its proper divisors (465690003).

1233322221 is a wasteful number, since it uses less digits than its factorization.

1233322221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66740.

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

The square root of 1233322221 is about 35118.6876320856. The cubic root of 1233322221 is about 1072.4050541625.

Adding to 1233322221 its reverse (1222233321), we get a palindrome (2455555542).

Subtracting from 1233322221 its reverse (1222233321), we obtain a square (11088900 = 3330²).

The spelling of 1233322221 in words is "one billion, two hundred thirty-three million, three hundred twenty-two thousand, two hundred twenty-one".