1433221221 has 8 divisors (see below), whose sum is σ = 1922405184. Its totient is φ = 949759040.

The previous prime is 1433221217. The next prime is 1433221247. The reversal of 1433221221 is 1221223341.

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 1433221221 - 2² = 1433221217 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1433221121) 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, 1429860 + ... + 1430861.

It is an arithmetic number, because the mean of its divisors is an integer number (240300648).

Almost surely, 2^1433221221 is an apocalyptic number.

It is an amenable number.

1433221221 is a deficient number, since it is larger than the sum of its proper divisors (489183963).

1433221221 is a wasteful number, since it uses less digits than its factorization.

1433221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2860891.

The product of its digits is 576, while the sum is 21.

The square root of 1433221221 is about 37857.9083019651. The cubic root of 1433221221 is about 1127.4684815092.

Adding to 1433221221 its reverse (1221223341), we get a palindrome (2654444562).

It can be divided in two parts, 14332 and 21221, that added together give a palindrome (35553).

The spelling of 1433221221 in words is "one billion, four hundred thirty-three million, two hundred twenty-one thousand, two hundred twenty-one".