201121220211 has 16 divisors (see below), whose sum is σ = 268768920960. Its totient is φ = 133777400960.

The previous prime is 201121220189. The next prime is 201121220213. The reversal of 201121220211 is 112022121102.

It is a cyclic number.

It is not a de Polignac number, because 201121220211 - 2¹⁴ = 201121203827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201121220213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3567916 + ... + 3623846.

It is an arithmetic number, because the mean of its divisors is an integer number (16798057560).

Almost surely, 2^201121220211 is an apocalyptic number.

201121220211 is a deficient number, since it is larger than the sum of its proper divisors (67647700749).

201121220211 is a wasteful number, since it uses less digits than its factorization.

201121220211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58626.

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

Adding to 201121220211 its reverse (112022121102), we get a palindrome (313143341313).

The spelling of 201121220211 in words is "two hundred one billion, one hundred twenty-one million, two hundred twenty thousand, two hundred eleven".