1233443221 has 16 divisors (see below), whose sum is σ = 1309464576. Its totient is φ = 1159920000.

The previous prime is 1233443219. The next prime is 1233443227. The reversal of 1233443221 is 1223443321.

It is a cyclic number.

It is not a de Polignac number, because 1233443221 - 2¹ = 1233443219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233443227) 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, 342651 + ... + 346231.

It is an arithmetic number, because the mean of its divisors is an integer number (81841536).

Almost surely, 2^1233443221 is an apocalyptic number.

It is an amenable number.

1233443221 is a deficient number, since it is larger than the sum of its proper divisors (76021355).

1233443221 is a wasteful number, since it uses less digits than its factorization.

1233443221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3924.

The product of its digits is 3456, while the sum is 25.

The square root of 1233443221 is about 35120.4103193570. The cubic root of 1233443221 is about 1072.4401238753.

Adding to 1233443221 its reverse (1223443321), we get a palindrome (2456886542).

It can be divided in two parts, 12334 and 43221, that added together give a palindrome (55555).

The spelling of 1233443221 in words is "one billion, two hundred thirty-three million, four hundred forty-three thousand, two hundred twenty-one".