111112002211221 has 48 divisors (see below), whose sum is σ = 176404606297920. Its totient is φ = 66834960917760.

The previous prime is 111112002211187. The next prime is 111112002211247. The reversal of 111112002211221 is 122112200211111.

It is a happy number.

111112002211221 is a `hidden beast` number, since 1 + 11 + 11 + 200 + 221 + 1 + 221 = 666.

It is not a de Polignac number, because 111112002211221 - 2⁶ = 111112002211157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111112002211194 and 111112002211203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111112002211291) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1011966 + ... + 14941488.

It is an arithmetic number, because the mean of its divisors is an integer number (3675095964540).

Almost surely, 2^{111112002211221} is an apocalyptic number.

111112002211221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111112002211221 is a deficient number, since it is larger than the sum of its proper divisors (65292604086699).

111112002211221 is a wasteful number, since it uses less digits than its factorization.

111112002211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13930146 (or 13930143 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 111112002211221 its reverse (122112200211111), we get a palindrome (233224202422332).

The spelling of 111112002211221 in words is "one hundred eleven trillion, one hundred twelve billion, two million, two hundred eleven thousand, two hundred twenty-one".