2201110121221 has 8 divisors (see below), whose sum is σ = 2402886711744. Its totient is φ = 1999612809120.

The previous prime is 2201110121191. The next prime is 2201110121251. The reversal of 2201110121221 is 1221210111022.

It is an interprime number because it is at equal distance from previous prime (2201110121191) and next prime (2201110121251).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2201110121221 - 2¹³ = 2201110113029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2201110121195 and 2201110121204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201110121251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69803121 + ... + 69834646.

It is an arithmetic number, because the mean of its divisors is an integer number (300360838968).

Almost surely, 2^{2201110121221} is an apocalyptic number.

It is an amenable number.

2201110121221 is a deficient number, since it is larger than the sum of its proper divisors (201776590523).

2201110121221 is a wasteful number, since it uses less digits than its factorization.

2201110121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139639211.

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

Adding to 2201110121221 its reverse (1221210111022), we get a palindrome (3422320232243).

The spelling of 2201110121221 in words is "two trillion, two hundred one billion, one hundred ten million, one hundred twenty-one thousand, two hundred twenty-one".