1153221306 has 8 divisors (see below), whose sum is σ = 2306442624. Its totient is φ = 384407100.

The previous prime is 1153221301. The next prime is 1153221313. The reversal of 1153221306 is 6031223511.

It is a sphenic number, since it is the product of 3 distinct primes.

1153221306 is an admirable number.

It is a super-2 number, since 2×1153221306² = 2659838761224691272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1153221301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96101770 + ... + 96101781.

It is an arithmetic number, because the mean of its divisors is an integer number (288305328).

Almost surely, 2^1153221306 is an apocalyptic number.

1153221306 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1153221306 is a wasteful number, since it uses less digits than its factorization.

1153221306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192203556.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 1153221306 is about 33959.1122675490. The cubic root of 1153221306 is about 1048.6668813825. Note that the first 3 decimals are identical.

Adding to 1153221306 its reverse (6031223511), we get a palindrome (7184444817).

The spelling of 1153221306 in words is "one billion, one hundred fifty-three million, two hundred twenty-one thousand, three hundred six".