201221021212211 has 32 divisors (see below), whose sum is σ = 273206509632000. Its totient is φ = 143108171585280.

The previous prime is 201221021212207. The next prime is 201221021212217. The reversal of 201221021212211 is 112212120122102.

It is not a de Polignac number, because 201221021212211 - 2² = 201221021212207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201221021212217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1129236761 + ... + 1129414938.

It is an arithmetic number, because the mean of its divisors is an integer number (8537703426000).

Almost surely, 2^{201221021212211} is an apocalyptic number.

201221021212211 is a deficient number, since it is larger than the sum of its proper divisors (71985488419789).

201221021212211 is a wasteful number, since it uses less digits than its factorization.

201221021212211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2258651819.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 201221021212211 its reverse (112212120122102), we get a palindrome (313433141334313).

The spelling of 201221021212211 in words is "two hundred one trillion, two hundred twenty-one billion, twenty-one million, two hundred twelve thousand, two hundred eleven".