2012001112021 has 4 divisors (see below), whose sum is σ = 2066379520492. Its totient is φ = 1957622703552.

The previous prime is 2012001112019. The next prime is 2012001112027. The reversal of 2012001112021 is 1202111002102.

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 1884541401796 + 127459710225 = 1372786^2 + 357015^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012001112021 - 2¹ = 2012001112019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2012001111992 and 2012001112010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012001112027) 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 in 3 ways as a sum of consecutive naturals, for example, 27189204180 + ... + 27189204253.

It is an arithmetic number, because the mean of its divisors is an integer number (516594880123).

Almost surely, 2^{2012001112021} is an apocalyptic number.

It is an amenable number.

2012001112021 is a deficient number, since it is larger than the sum of its proper divisors (54378408471).

2012001112021 is an equidigital number, since it uses as much as digits as its factorization.

2012001112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54378408470.

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

Adding to 2012001112021 its reverse (1202111002102), we get a palindrome (3214112114123).

The spelling of 2012001112021 in words is "two trillion, twelve billion, one million, one hundred twelve thousand, twenty-one".