1153321012 has 12 divisors (see below), whose sum is σ = 2018674980. Its totient is φ = 576556736.

The previous prime is 1153321009. The next prime is 1153321019. The reversal of 1153321012 is 2101233511.

It can be written as a sum of positive squares in 2 ways, for example, as 692531856 + 460789156 = 26316^2 + 21466^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153321019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2538 + ... + 48094.

It is an arithmetic number, because the mean of its divisors is an integer number (168222915).

Almost surely, 2^1153321012 is an apocalyptic number.

It is an amenable number.

1153321012 is a deficient number, since it is larger than the sum of its proper divisors (865353968).

1153321012 is a wasteful number, since it uses less digits than its factorization.

1153321012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51890 (or 51888 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1153321012 is about 33960.5802659495. The cubic root of 1153321012 is about 1048.6971026322.

Adding to 1153321012 its reverse (2101233511), we get a palindrome (3254554523).

The spelling of 1153321012 in words is "one billion, one hundred fifty-three million, three hundred twenty-one thousand, twelve".