11072921 has 8 divisors (see below), whose sum is σ = 11468544. Its totient is φ = 10679760.

The previous prime is 11072909. The next prime is 11072927. The reversal of 11072921 is 12927011.

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 11072921 - 2²² = 6878617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11072927) 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 7 ways as a sum of consecutive naturals, for example, 16631 + ... + 17283.

It is an arithmetic number, because the mean of its divisors is an integer number (1433568).

Almost surely, 2^11072921 is an apocalyptic number.

It is an amenable number.

11072921 is a deficient number, since it is larger than the sum of its proper divisors (395623).

11072921 is an equidigital number, since it uses as much as digits as its factorization.

11072921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231.

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 11072921 is about 3327.5998858036. The cubic root of 11072921 is about 222.8883660387. Note that the first 3 decimals are identical.

Adding to 11072921 its reverse (12927011), we get a palindrome (23999932).

The spelling of 11072921 in words is "eleven million, seventy-two thousand, nine hundred twenty-one".