1153133212 has 48 divisors (see below), whose sum is σ = 2521628928. Its totient is φ = 448254720.

The previous prime is 1153133209. The next prime is 1153133251. The reversal of 1153133212 is 2123313511.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139828 + ... + 147844.

It is an arithmetic number, because the mean of its divisors is an integer number (52533936).

Almost surely, 2^1153133212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1153133212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1260814464).

1153133212 is an abundant number, since it is smaller than the sum of its proper divisors (1368495716).

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

1153133212 is a wasteful number, since it uses less digits than its factorization.

1153133212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8506 (or 8504 counting only the distinct ones).

The product of its digits is 540, while the sum is 22.

The square root of 1153133212 is about 33957.8151829590. The cubic root of 1153133212 is about 1048.6401783227.

Adding to 1153133212 its reverse (2123313511), we get a palindrome (3276446723).

The spelling of 1153133212 in words is "one billion, one hundred fifty-three million, one hundred thirty-three thousand, two hundred twelve".