11373821 has 2 divisors, whose sum is σ = 11373822. Its totient is φ = 11373820.

The previous prime is 11373811. The next prime is 11373841. The reversal of 11373821 is 12837311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11222500 + 151321 = 3350^2 + 389^2 .

It is a cyclic number.

It is not a de Polignac number, because 11373821 - 2¹⁸ = 11111677 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11373811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5686910 + 5686911.

It is an arithmetic number, because the mean of its divisors is an integer number (5686911).

Almost surely, 2^11373821 is an apocalyptic number.

It is an amenable number.

11373821 is a deficient number, since it is larger than the sum of its proper divisors (1).

11373821 is an equidigital number, since it uses as much as digits as its factorization.

11373821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 26.

The square root of 11373821 is about 3372.5095996898. The cubic root of 11373821 is about 224.8893019250.

The spelling of 11373821 in words is "eleven million, three hundred seventy-three thousand, eight hundred twenty-one".