1112001200021 has 2 divisors, whose sum is σ = 1112001200022. Its totient is φ = 1112001200020.

The previous prime is 1112001199999. The next prime is 1112001200027. The reversal of 1112001200021 is 1200021002111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 577075719025 + 534925480996 = 759655^2 + 731386^2 .

It is a cyclic number.

It is not a de Polignac number, because 1112001200021 - 2¹⁴ = 1112001183637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1112001199975 and 1112001200011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1112001200027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556000600010 + 556000600011.

It is an arithmetic number, because the mean of its divisors is an integer number (556000600011).

Almost surely, 2^{1112001200021} is an apocalyptic number.

It is an amenable number.

1112001200021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112001200021 is an equidigital number, since it uses as much as digits as its factorization.

1112001200021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1112001200021 its reverse (1200021002111), we get a palindrome (2312022202132).

The spelling of 1112001200021 in words is "one trillion, one hundred twelve billion, one million, two hundred thousand, twenty-one".