2201222201221 has 4 divisors (see below), whose sum is σ = 2201239396192. Its totient is φ = 2201205006252.

The previous prime is 2201222201219. The next prime is 2201222201237. The reversal of 2201222201221 is 1221022221022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2201222201221 - 2¹ = 2201222201219 is a prime.

It is a super-2 number, since 2×2201222201221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201222201251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8404011 + ... + 8661976.

It is an arithmetic number, because the mean of its divisors is an integer number (550309849048).

Almost surely, 2^{2201222201221} is an apocalyptic number.

It is an amenable number.

2201222201221 is a deficient number, since it is larger than the sum of its proper divisors (17194971).

2201222201221 is a wasteful number, since it uses less digits than its factorization.

2201222201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17194970.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 2201222201221 its reverse (1221022221022), we get a palindrome (3422244422243).

The spelling of 2201222201221 in words is "two trillion, two hundred one billion, two hundred twenty-two million, two hundred one thousand, two hundred twenty-one".