221200111021201 has 16 divisors (see below), whose sum is σ = 251366250822400. Its totient is φ = 192965199758208.

The previous prime is 221200111021193. The next prime is 221200111021213. The reversal of 221200111021201 is 102120111002122.

It is a cyclic number.

It is not a de Polignac number, because 221200111021201 - 2³ = 221200111021193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221200111021291) 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, 1094699721 + ... + 1094901766.

It is an arithmetic number, because the mean of its divisors is an integer number (15710390676400).

Almost surely, 2^{221200111021201} is an apocalyptic number.

It is an amenable number.

221200111021201 is a deficient number, since it is larger than the sum of its proper divisors (30166139801199).

221200111021201 is a wasteful number, since it uses less digits than its factorization.

221200111021201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2189601928.

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

Adding to 221200111021201 its reverse (102120111002122), we get a palindrome (323320222023323).

The spelling of 221200111021201 in words is "two hundred twenty-one trillion, two hundred billion, one hundred eleven million, twenty-one thousand, two hundred one".