1091053121 has 8 divisors (see below), whose sum is σ = 1110432000. Its totient is φ = 1071813600.

The previous prime is 1091053111. The next prime is 1091053141. The reversal of 1091053121 is 1213501901.

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 1091053121 - 2⁶ = 1091053057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1091053111) 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, 18980 + ... + 50421.

It is an arithmetic number, because the mean of its divisors is an integer number (138804000).

Almost surely, 2^1091053121 is an apocalyptic number.

It is an amenable number.

1091053121 is a deficient number, since it is larger than the sum of its proper divisors (19378879).

1091053121 is an equidigital number, since it uses as much as digits as its factorization.

1091053121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69679.

The product of its (nonzero) digits is 270, while the sum is 23.

The square root of 1091053121 is about 33031.0932456072. The cubic root of 1091053121 is about 1029.4738007255.

The spelling of 1091053121 in words is "one billion, ninety-one million, fifty-three thousand, one hundred twenty-one".