1135221252 has 24 divisors (see below), whose sum is σ = 2889654432. Its totient is φ = 344006400.

The previous prime is 1135221239. The next prime is 1135221277. The reversal of 1135221252 is 2521225311.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4299949 + ... + 4300212.

It is an arithmetic number, because the mean of its divisors is an integer number (120402268).

Almost surely, 2^1135221252 is an apocalyptic number.

1135221252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1135221252 is an abundant number, since it is smaller than the sum of its proper divisors (1754433180).

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

1135221252 is a wasteful number, since it uses less digits than its factorization.

1135221252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8600179 (or 8600177 counting only the distinct ones).

The product of its digits is 1200, while the sum is 24.

The square root of 1135221252 is about 33693.0445641233. The cubic root of 1135221252 is about 1043.1822070015.

Adding to 1135221252 its reverse (2521225311), we get a palindrome (3656446563).

The spelling of 1135221252 in words is "one billion, one hundred thirty-five million, two hundred twenty-one thousand, two hundred fifty-two".