1112002012021 has 4 divisors (see below), whose sum is σ = 1142056120492. Its totient is φ = 1081947903552.

The previous prime is 1112002012007. The next prime is 1112002012031. The reversal of 1112002012021 is 1202102002111.

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 393491489521 + 718510522500 = 627289^2 + 847650^2 .

It is a cyclic number.

It is not a de Polignac number, because 1112002012021 - 2¹¹ = 1112002009973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1112002011992 and 1112002012010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112002012031) 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 3 ways as a sum of consecutive naturals, for example, 15027054180 + ... + 15027054253.

It is an arithmetic number, because the mean of its divisors is an integer number (285514030123).

Almost surely, 2^{1112002012021} is an apocalyptic number.

It is an amenable number.

1112002012021 is a deficient number, since it is larger than the sum of its proper divisors (30054108471).

1112002012021 is an equidigital number, since it uses as much as digits as its factorization.

1112002012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30054108470.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1112002012021 its reverse (1202102002111), we get a palindrome (2314104014132).

The spelling of 1112002012021 in words is "one trillion, one hundred twelve billion, two million, twelve thousand, twenty-one".