201101201220221 has 16 divisors (see below), whose sum is σ = 202850450880000. Its totient is φ = 199357491006000.

The previous prime is 201101201220197. The next prime is 201101201220277. The reversal of 201101201220221 is 122022102101102.

It is a cyclic number.

It is not a de Polignac number, because 201101201220221 - 2²² = 201101197025917 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 201101201220221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201101201220421) 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, 1487246306 + ... + 1487381516.

It is an arithmetic number, because the mean of its divisors is an integer number (12678153180000).

Almost surely, 2^{201101201220221} is an apocalyptic number.

It is an amenable number.

201101201220221 is a deficient number, since it is larger than the sum of its proper divisors (1749249659779).

201101201220221 is a wasteful number, since it uses less digits than its factorization.

201101201220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155600.

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

Adding to 201101201220221 its reverse (122022102101102), we get a palindrome (323123303321323).

The spelling of 201101201220221 in words is "two hundred one trillion, one hundred one billion, two hundred one million, two hundred twenty thousand, two hundred twenty-one".