2120201221211 has 4 divisors (see below), whose sum is σ = 2188594809024. Its totient is φ = 2051807633400.

The previous prime is 2120201221133. The next prime is 2120201221217. The reversal of 2120201221211 is 1121221020212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2120201221211 - 2¹⁸ = 2120200959067 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2120201221211.

It is not an unprimeable number, because it can be changed into a prime (2120201221217) 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, 34196793860 + ... + 34196793921.

It is an arithmetic number, because the mean of its divisors is an integer number (547148702256).

Almost surely, 2^{2120201221211} is an apocalyptic number.

2120201221211 is a deficient number, since it is larger than the sum of its proper divisors (68393587813).

2120201221211 is an equidigital number, since it uses as much as digits as its factorization.

2120201221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68393587812.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2120201221211 its reverse (1121221020212), we get a palindrome (3241422241423).

The spelling of 2120201221211 in words is "two trillion, one hundred twenty billion, two hundred one million, two hundred twenty-one thousand, two hundred eleven".