111421204 has 6 divisors (see below), whose sum is σ = 194987114. Its totient is φ = 55710600.

The previous prime is 111421183. The next prime is 111421243. The reversal of 111421204 is 402124111.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 106131204 + 5290000 = 10302^2 + 2300^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13927647 + ... + 13927654.

Almost surely, 2^111421204 is an apocalyptic number.

It is an amenable number.

111421204 is a deficient number, since it is larger than the sum of its proper divisors (83565910).

111421204 is a wasteful number, since it uses less digits than its factorization.

111421204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27855305 (or 27855303 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 111421204 is about 10555.6242828172. The cubic root of 111421204 is about 481.1966726990.

Adding to 111421204 its reverse (402124111), we get a palindrome (513545315).

The spelling of 111421204 in words is "one hundred eleven million, four hundred twenty-one thousand, two hundred four".