1133430221 has 12 divisors (see below), whose sum is σ = 1438342560. Its totient is φ = 883191960.

The previous prime is 1133430217. The next prime is 1133430227. The reversal of 1133430221 is 1220343311.

It is not a de Polignac number, because 1133430221 - 2² = 1133430217 is a prime.

It is a super-2 number, since 2×1133430221² = 2569328131752217682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1133430193 and 1133430202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1133430227) 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, 1050881 + ... + 1051958.

It is an arithmetic number, because the mean of its divisors is an integer number (119861880).

Almost surely, 2^1133430221 is an apocalyptic number.

1133430221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1133430221 is a deficient number, since it is larger than the sum of its proper divisors (304912339).

1133430221 is a wasteful number, since it uses less digits than its factorization.

1133430221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2102864 (or 2102857 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1133430221 is about 33666.4554267300. The cubic root of 1133430221 is about 1042.6333110329.

Adding to 1133430221 its reverse (1220343311), we get a palindrome (2353773532).

The spelling of 1133430221 in words is "one billion, one hundred thirty-three million, four hundred thirty thousand, two hundred twenty-one".