2011021201201 has 4 divisors (see below), whose sum is σ = 2011024037412. Its totient is φ = 2011018364992.

The previous prime is 2011021201187. The next prime is 2011021201213. The reversal of 2011021201201 is 1021021201102.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 931186400400 + 1079834800801 = 964980^2 + 1039151^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011021201201 - 2¹⁹ = 2011020676913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2011021201271) 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, 707901 + ... + 2126773.

It is an arithmetic number, because the mean of its divisors is an integer number (502756009353).

Almost surely, 2^{2011021201201} is an apocalyptic number.

It is an amenable number.

2011021201201 is a deficient number, since it is larger than the sum of its proper divisors (2836211).

2011021201201 is a wasteful number, since it uses less digits than its factorization.

2011021201201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2836210.

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

Adding to 2011021201201 its reverse (1021021201102), we get a palindrome (3032042402303).

Subtracting from 2011021201201 its reverse (1021021201102), we obtain a palindrome (990000000099).

The spelling of 2011021201201 in words is "two trillion, eleven billion, twenty-one million, two hundred one thousand, two hundred one".