1109753221 has 8 divisors (see below), whose sum is σ = 1145957888. Its totient is φ = 1073574000.

The previous prime is 1109753219. The next prime is 1109753233. The reversal of 1109753221 is 1223579011.

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

It is a cyclic number.

It is not a de Polignac number, because 1109753221 - 2¹ = 1109753219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1109753921) 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, 126931 + ... + 135391.

It is an arithmetic number, because the mean of its divisors is an integer number (143244736).

Almost surely, 2^1109753221 is an apocalyptic number.

It is an amenable number.

1109753221 is a deficient number, since it is larger than the sum of its proper divisors (36204667).

1109753221 is an equidigital number, since it uses as much as digits as its factorization.

1109753221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12723.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 1109753221 is about 33312.9587548149. The cubic root of 1109753221 is about 1035.3220686256.

1109753221 divided by its sum of digits (31) gives a triangular number (35798491 = T₈₄₆₁).

The spelling of 1109753221 in words is "one billion, one hundred nine million, seven hundred fifty-three thousand, two hundred twenty-one".