111222330021 has 24 divisors (see below), whose sum is σ = 176238560160. Its totient is φ = 67030884000.

The previous prime is 111222330001. The next prime is 111222330047. The reversal of 111222330021 is 120033222111.

111222330021 is a `hidden beast` number, since 111 + 222 + 330 + 0 + 2 + 1 = 666.

It is not a de Polignac number, because 111222330021 - 2⁹ = 111222329509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111222329976 and 111222330003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111222330001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3120430 + ... + 3155871.

It is an arithmetic number, because the mean of its divisors is an integer number (7343273340).

Almost surely, 2^111222330021 is an apocalyptic number.

111222330021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111222330021 is a deficient number, since it is larger than the sum of its proper divisors (65016230139).

111222330021 is a wasteful number, since it uses less digits than its factorization.

111222330021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6276497 (or 6276494 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 111222330021 its reverse (120033222111), we get a palindrome (231255552132).

The spelling of 111222330021 in words is "one hundred eleven billion, two hundred twenty-two million, three hundred thirty thousand, twenty-one".