1133221111 has 8 divisors (see below), whose sum is σ = 1248482448. Its totient is φ = 1020000000.

The previous prime is 1133221093. The next prime is 1133221153. The reversal of 1133221111 is 1111223311.

It is a happy number.

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 1133221111 - 2⁵ = 1133221079 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1133221211) 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 7 ways as a sum of consecutive naturals, for example, 508890 + ... + 511111.

It is an arithmetic number, because the mean of its divisors is an integer number (156060306).

Almost surely, 2^1133221111 is an apocalyptic number.

1133221111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1133221111 is a deficient number, since it is larger than the sum of its proper divisors (115261337).

1133221111 is a wasteful number, since it uses less digits than its factorization.

1133221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020113.

The product of its digits is 36, while the sum is 16.

The square root of 1133221111 is about 33663.3496699304. The cubic root of 1133221111 is about 1042.5691875556.

Adding to 1133221111 its reverse (1111223311), we get a palindrome (2244444422).

The spelling of 1133221111 in words is "one billion, one hundred thirty-three million, two hundred twenty-one thousand, one hundred eleven".