111304403455221 has 24 divisors (see below), whose sum is σ = 164363665811904. Its totient is φ = 72561885802560.

The previous prime is 111304403455169. The next prime is 111304403455241. The reversal of 111304403455221 is 122554304403111.

111304403455221 is a `hidden beast` number, since 1 + 1 + 1 + 30 + 4 + 40 + 34 + 552 + 2 + 1 = 666.

It is not a de Polignac number, because 111304403455221 - 2¹⁸ = 111304403193077 is a prime.

It is a super-2 number, since 2×111304403455221² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111304403455241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 673583145 + ... + 673748366.

It is an arithmetic number, because the mean of its divisors is an integer number (6848486075496).

Almost surely, 2^{111304403455221} is an apocalyptic number.

It is an amenable number.

111304403455221 is a deficient number, since it is larger than the sum of its proper divisors (53059262356683).

111304403455221 is a wasteful number, since it uses less digits than its factorization.

111304403455221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1347331721 (or 1347331718 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

Adding to 111304403455221 its reverse (122554304403111), we get a palindrome (233858707858332).

The spelling of 111304403455221 in words is "one hundred eleven trillion, three hundred four billion, four hundred three million, four hundred fifty-five thousand, two hundred twenty-one".