2012021112021 has 4 divisors (see below), whose sum is σ = 2682694816032. Its totient is φ = 1341347408012.

The previous prime is 2012021111987. The next prime is 2012021112029. The reversal of 2012021112021 is 1202111202102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2012021112021 - 2³⁰ = 2010947370197 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012021112029) 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, 335336852001 + ... + 335336852006.

It is an arithmetic number, because the mean of its divisors is an integer number (670673704008).

Almost surely, 2^{2012021112021} is an apocalyptic number.

It is an amenable number.

2012021112021 is a deficient number, since it is larger than the sum of its proper divisors (670673704011).

2012021112021 is an equidigital number, since it uses as much as digits as its factorization.

2012021112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670673704010.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2012021112021 its reverse (1202111202102), we get a palindrome (3214132314123).

The spelling of 2012021112021 in words is "two trillion, twelve billion, twenty-one million, one hundred twelve thousand, twenty-one".