1153221207 has 8 divisors (see below), whose sum is σ = 1618556160. Its totient is φ = 728350200.

The previous prime is 1153221191. The next prime is 1153221229. The reversal of 1153221207 is 7021223511.

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

It is not a de Polignac number, because 1153221207 - 2⁴ = 1153221191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153221107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10115919 + ... + 10116032.

It is an arithmetic number, because the mean of its divisors is an integer number (202319520).

Almost surely, 2^1153221207 is an apocalyptic number.

1153221207 is a deficient number, since it is larger than the sum of its proper divisors (465334953).

1153221207 is a wasteful number, since it uses less digits than its factorization.

1153221207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20231973.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 1153221207 is about 33959.1108099137. The cubic root of 1153221207 is about 1048.6668513744. Note that the first 3 decimals are identical.

Adding to 1153221207 its reverse (7021223511), we get a palindrome (8174444718).

The spelling of 1153221207 in words is "one billion, one hundred fifty-three million, two hundred twenty-one thousand, two hundred seven".