111021220304 has 20 divisors (see below), whose sum is σ = 215387790564. Its totient is φ = 55437274368.

The previous prime is 111021220291. The next prime is 111021220307. The reversal of 111021220304 is 403022120111.

It can be written as a sum of positive squares in 2 ways, for example, as 77695987600 + 33325232704 = 278740^2 + 182552^2 .

It is a super-2 number, since 2×111021220304² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111021220307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4570997 + ... + 4595220.

Almost surely, 2^111021220304 is an apocalyptic number.

It is an amenable number.

111021220304 is a deficient number, since it is larger than the sum of its proper divisors (104366570260).

111021220304 is an equidigital number, since it uses as much as digits as its factorization.

111021220304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9166982 (or 9166976 counting only the distinct ones).

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

Adding to 111021220304 its reverse (403022120111), we get a palindrome (514043340415).

The spelling of 111021220304 in words is "one hundred eleven billion, twenty-one million, two hundred twenty thousand, three hundred four".