2012201020121 has 4 divisors (see below), whose sum is σ = 2012379307392. Its totient is φ = 2012022732852.

The previous prime is 2012201020111. The next prime is 2012201020129. The reversal of 2012201020121 is 1210201022102.

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 2012201020121 - 2¹⁰ = 2012201019097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2012201020096 and 2012201020105.

It is not an unprimeable number, because it can be changed into a prime (2012201020129) 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, 89126705 + ... + 89149278.

It is an arithmetic number, because the mean of its divisors is an integer number (503094826848).

Almost surely, 2^{2012201020121} is an apocalyptic number.

It is an amenable number.

2012201020121 is a deficient number, since it is larger than the sum of its proper divisors (178287271).

2012201020121 is a wasteful number, since it uses less digits than its factorization.

2012201020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178287270.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2012201020121 its reverse (1210201022102), we get a palindrome (3222402042223).

The spelling of 2012201020121 in words is "two trillion, twelve billion, two hundred one million, twenty thousand, one hundred twenty-one".