1133332221 has 48 divisors (see below), whose sum is σ = 1785896640. Its totient is φ = 637378560.

The previous prime is 1133332219. The next prime is 1133332243. The reversal of 1133332221 is 1222333311.

It is not a de Polignac number, because 1133332221 - 2¹ = 1133332219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1133332201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4409725 + ... + 4409981.

It is an arithmetic number, because the mean of its divisors is an integer number (37206180).

Almost surely, 2^1133332221 is an apocalyptic number.

It is an amenable number.

1133332221 is a deficient number, since it is larger than the sum of its proper divisors (652564419).

1133332221 is a wasteful number, since it uses less digits than its factorization.

1133332221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634 (or 627 counting only the distinct ones).

The product of its digits is 648, while the sum is 21.

The square root of 1133332221 is about 33664.9999405911. Note that the first 4 decimals coincide. The cubic root of 1133332221 is about 1042.6032603638.

Adding to 1133332221 its reverse (1222333311), we get a palindrome (2355665532).

The spelling of 1133332221 in words is "one billion, one hundred thirty-three million, three hundred thirty-two thousand, two hundred twenty-one".