201211001120221 has 16 divisors (see below), whose sum is σ = 212651554221568. Its totient is φ = 190084912012800.

The previous prime is 201211001120209. The next prime is 201211001120263. The reversal of 201211001120221 is 122021100112102.

201211001120221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 201211001120221 - 2²⁹ = 201210464249309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201211001120195 and 201211001120204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201211001120821) 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, 40103400 + ... + 44840881.

It is an arithmetic number, because the mean of its divisors is an integer number (13290722138848).

Almost surely, 2^{201211001120221} is an apocalyptic number.

It is an amenable number.

201211001120221 is a deficient number, since it is larger than the sum of its proper divisors (11440553101347).

201211001120221 is a wasteful number, since it uses less digits than its factorization.

201211001120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84946132.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 201211001120221 its reverse (122021100112102), we get a palindrome (323232101232323).

The spelling of 201211001120221 in words is "two hundred one trillion, two hundred eleven billion, one million, one hundred twenty thousand, two hundred twenty-one".