2101212021201 has 16 divisors (see below), whose sum is σ = 2950345789440. Its totient is φ = 1326506947920.

The previous prime is 2101212021187. The next prime is 2101212021211. The reversal of 2101212021201 is 1021202121012.

It is not a de Polignac number, because 2101212021201 - 2¹⁰ = 2101212020177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2101212021211) 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 15 ways as a sum of consecutive naturals, for example, 7843905 + ... + 8107358.

It is an arithmetic number, because the mean of its divisors is an integer number (184396611840).

Almost surely, 2^{2101212021201} is an apocalyptic number.

It is an amenable number.

2101212021201 is a deficient number, since it is larger than the sum of its proper divisors (849133768239).

2101212021201 is a wasteful number, since it uses less digits than its factorization.

2101212021201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15953596.

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

Adding to 2101212021201 its reverse (1021202121012), we get a palindrome (3122414142213).

It can be divided in two parts, 210121 and 2021201, that added together give a palindrome (2231322).

The spelling of 2101212021201 in words is "two trillion, one hundred one billion, two hundred twelve million, twenty-one thousand, two hundred one".