2201201111221 has 32 divisors (see below), whose sum is σ = 2584899330048. Its totient is φ = 1835099151360.

The previous prime is 2201201111209. The next prime is 2201201111227. The reversal of 2201201111221 is 1221111021022.

It is a cyclic number.

It is not a de Polignac number, because 2201201111221 - 2¹⁹ = 2201200586933 is a prime.

It is a super-2 number, since 2×2201201111221² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2201201111195 and 2201201111204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201201111227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 489915651 + ... + 489920143.

It is an arithmetic number, because the mean of its divisors is an integer number (80778104064).

Almost surely, 2^{2201201111221} is an apocalyptic number.

It is an amenable number.

2201201111221 is a deficient number, since it is larger than the sum of its proper divisors (383698218827).

2201201111221 is a wasteful number, since it uses less digits than its factorization.

2201201111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9381.

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

Adding to 2201201111221 its reverse (1221111021022), we get a palindrome (3422312132243).

The spelling of 2201201111221 in words is "two trillion, two hundred one billion, two hundred one million, one hundred eleven thousand, two hundred twenty-one".