111112002010021 has 4 divisors (see below), whose sum is σ = 111230080652844. Its totient is φ = 110993923367200.

The previous prime is 111112002009997. The next prime is 111112002010069. The reversal of 111112002010021 is 120010200211111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64257634759396 + 46854367250625 = 8016086^2 + 6845025^2 .

It is a cyclic number.

It is not a de Polignac number, because 111112002010021 - 2¹¹ = 111112002007973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111112002009983 and 111112002010010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111112002010721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59039320000 + ... + 59039321881.

It is an arithmetic number, because the mean of its divisors is an integer number (27807520163211).

Almost surely, 2^{111112002010021} is an apocalyptic number.

It is an amenable number.

111112002010021 is a deficient number, since it is larger than the sum of its proper divisors (118078642823).

111112002010021 is an equidigital number, since it uses as much as digits as its factorization.

111112002010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118078642822.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111112002010021 its reverse (120010200211111), we get a palindrome (231122202221132).

The spelling of 111112002010021 in words is "one hundred eleven trillion, one hundred twelve billion, two million, ten thousand, twenty-one".