1133221311 has 12 divisors (see below), whose sum is σ = 1681115592. Its totient is φ = 735062256.

The previous prime is 1133221303. The next prime is 1133221321. The reversal of 1133221311 is 1131223311.

1133221311 is a `hidden beast` number, since 1 + 1 + 332 + 21 + 311 = 666.

It is not a de Polignac number, because 1133221311 - 2³ = 1133221303 is a prime.

It is a super-3 number, since 3×1133221311³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1133221321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1701201 + ... + 1701866.

It is an arithmetic number, because the mean of its divisors is an integer number (140092966).

Almost surely, 2^1133221311 is an apocalyptic number.

1133221311 is a deficient number, since it is larger than the sum of its proper divisors (547894281).

1133221311 is a wasteful number, since it uses less digits than its factorization.

1133221311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3403110 (or 3403107 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 1133221311 is about 33663.3526405199. The cubic root of 1133221311 is about 1042.5692488893.

Adding to 1133221311 its reverse (1131223311), we get a palindrome (2264444622).

The spelling of 1133221311 in words is "one billion, one hundred thirty-three million, two hundred twenty-one thousand, three hundred eleven".