201021220211 has 16 divisors (see below), whose sum is σ = 232064498688. Its totient is φ = 170560188000.

The previous prime is 201021220207. The next prime is 201021220217. The reversal of 201021220211 is 112022120102.

It is a cyclic number.

It is not a de Polignac number, because 201021220211 - 2² = 201021220207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201021220217) 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, 3437426 + ... + 3495416.

It is an arithmetic number, because the mean of its divisors is an integer number (14504031168).

Almost surely, 2^201021220211 is an apocalyptic number.

201021220211 is a deficient number, since it is larger than the sum of its proper divisors (31043278477).

201021220211 is a wasteful number, since it uses less digits than its factorization.

201021220211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63002.

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

Adding to 201021220211 its reverse (112022120102), we get a palindrome (313043340313).

The spelling of 201021220211 in words is "two hundred one billion, twenty-one million, two hundred twenty thousand, two hundred eleven".