11110921 has 2 divisors, whose sum is σ = 11110922. Its totient is φ = 11110920.

The previous prime is 11110907. The next prime is 11110933. The reversal of 11110921 is 12901111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8785296 + 2325625 = 2964^2 + 1525^2 .

It is a cyclic number.

It is not a de Polignac number, because 11110921 - 2⁵ = 11110889 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11110895 and 11110904.

It is not a weakly prime, because it can be changed into another prime (11110901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555460 + 5555461.

It is an arithmetic number, because the mean of its divisors is an integer number (5555461).

Almost surely, 2^11110921 is an apocalyptic number.

It is an amenable number.

11110921 is a deficient number, since it is larger than the sum of its proper divisors (1).

11110921 is an equidigital number, since it uses as much as digits as its factorization.

11110921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 16.

The square root of 11110921 is about 3333.3048165447. The cubic root of 11110921 is about 223.1430440204.

The spelling of 11110921 in words is "eleven million, one hundred ten thousand, nine hundred twenty-one".