1153221234 has 48 divisors (see below), whose sum is σ = 2589197184. Its totient is φ = 342015520.

The previous prime is 1153221233. The next prime is 1153221239. The reversal of 1153221234 is 4321223511.

It is not an unprimeable number, because it can be changed into a prime (1153221233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17224 + ... + 51020.

It is an arithmetic number, because the mean of its divisors is an integer number (53941608).

Almost surely, 2^1153221234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1153221234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1294598592).

1153221234 is an abundant number, since it is smaller than the sum of its proper divisors (1435975950).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1153221234 is a wasteful number, since it uses less digits than its factorization.

1153221234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33871 (or 33860 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 1153221234 is about 33959.1112074506. Note that the first 3 decimals coincide. The cubic root of 1153221234 is about 1048.6668595584. Note that the first 3 decimals are identical.

Adding to 1153221234 its reverse (4321223511), we get a palindrome (5474444745).

The spelling of 1153221234 in words is "one billion, one hundred fifty-three million, two hundred twenty-one thousand, two hundred thirty-four".