111244921 has 2 divisors, whose sum is σ = 111244922. Its totient is φ = 111244920.

The previous prime is 111244873. The next prime is 111244937. The reversal of 111244921 is 129442111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67420521 + 43824400 = 8211^2 + 6620^2 .

It is a cyclic number.

It is not a de Polignac number, because 111244921 - 2⁹ = 111244409 is a prime.

It is equal to p_6370423 and since 111244921 and 6370423 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (111244961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55622460 + 55622461.

It is an arithmetic number, because the mean of its divisors is an integer number (55622461).

Almost surely, 2^111244921 is an apocalyptic number.

It is an amenable number.

111244921 is a deficient number, since it is larger than the sum of its proper divisors (1).

111244921 is an equidigital number, since it uses as much as digits as its factorization.

111244921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 25.

The square root of 111244921 is about 10547.2707844257. The cubic root of 111244921 is about 480.9427666049.

The spelling of 111244921 in words is "one hundred eleven million, two hundred forty-four thousand, nine hundred twenty-one".