1153221233 has 2 divisors, whose sum is σ = 1153221234. Its totient is φ = 1153221232.

The previous prime is 1153221229. The next prime is 1153221239. The reversal of 1153221233 is 3321223511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 909143104 + 244078129 = 30152^2 + 15623^2 .

It is an emirp because it is prime and its reverse (3321223511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1153221233 - 2² = 1153221229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1153221199 and 1153221208.

It is not a weakly prime, because it can be changed into another prime (1153221239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 576610616 + 576610617.

It is an arithmetic number, because the mean of its divisors is an integer number (576610617).

Almost surely, 2^1153221233 is an apocalyptic number.

It is an amenable number.

1153221233 is a deficient number, since it is larger than the sum of its proper divisors (1).

1153221233 is an equidigital number, since it uses as much as digits as its factorization.

1153221233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 23.

The square root of 1153221233 is about 33959.1111927271. Note that the first 4 decimals coincide. The cubic root of 1153221233 is about 1048.6668592553. Note that the first 3 decimals are identical.

Adding to 1153221233 its reverse (3321223511), we get a palindrome (4474444744).

The spelling of 1153221233 in words is "one billion, one hundred fifty-three million, two hundred twenty-one thousand, two hundred thirty-three".