111304421 has 2 divisors, whose sum is σ = 111304422. Its totient is φ = 111304420.

The previous prime is 111304397. The next prime is 111304433. The reversal of 111304421 is 124403111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81993025 + 29311396 = 9055^2 + 5414^2 .

It is a cyclic number.

It is not a de Polignac number, because 111304421 - 2¹⁸ = 111042277 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111304421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111304471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55652210 + 55652211.

It is an arithmetic number, because the mean of its divisors is an integer number (55652211).

Almost surely, 2^111304421 is an apocalyptic number.

It is an amenable number.

111304421 is a deficient number, since it is larger than the sum of its proper divisors (1).

111304421 is an equidigital number, since it uses as much as digits as its factorization.

111304421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 111304421 is about 10550.0910422612. The cubic root of 111304421 is about 481.0284963444.

Adding to 111304421 its reverse (124403111), we get a palindrome (235707532).

It can be divided in two parts, 11130 and 4421, that added together give a palindrome (15551).

The spelling of 111304421 in words is "one hundred eleven million, three hundred four thousand, four hundred twenty-one".