1133221211 has 2 divisors, whose sum is σ = 1133221212. Its totient is φ = 1133221210.

The previous prime is 1133221169. The next prime is 1133221223. The reversal of 1133221211 is 1121223311.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1133221211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1133221211.

It is not a weakly prime, because it can be changed into another prime (1133221231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 566610605 + 566610606.

It is an arithmetic number, because the mean of its divisors is an integer number (566610606).

Almost surely, 2^1133221211 is an apocalyptic number.

1133221211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1133221211 is an equidigital number, since it uses as much as digits as its factorization.

1133221211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72, while the sum is 17.

The square root of 1133221211 is about 33663.3511552252. The cubic root of 1133221211 is about 1042.5692182224.

Adding to 1133221211 its reverse (1121223311), we get a palindrome (2254444522).

The spelling of 1133221211 in words is "one billion, one hundred thirty-three million, two hundred twenty-one thousand, two hundred eleven".