2201122100221 has 16 divisors (see below), whose sum is σ = 2425110798528. Its totient is φ = 1981116352000.

The previous prime is 2201122100189. The next prime is 2201122100239. The reversal of 2201122100221 is 1220012211022.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2201122100221 - 2⁵ = 2201122100189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2201122100195 and 2201122100204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201122101221) 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, 38759970 + ... + 38816716.

It is an arithmetic number, because the mean of its divisors is an integer number (151569424908).

Almost surely, 2^{2201122100221} is an apocalyptic number.

It is an amenable number.

2201122100221 is a deficient number, since it is larger than the sum of its proper divisors (223988698307).

2201122100221 is a wasteful number, since it uses less digits than its factorization.

2201122100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91772.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2201122100221 its reverse (1220012211022), we get a palindrome (3421134311243).

The spelling of 2201122100221 in words is "two trillion, two hundred one billion, one hundred twenty-two million, one hundred thousand, two hundred twenty-one".