2201112022221 has 24 divisors (see below), whose sum is σ = 3636538414080. Its totient is φ = 1256754838176.

The previous prime is 2201112022201. The next prime is 2201112022229. The reversal of 2201112022221 is 1222202111022.

It is a happy number.

It is not a de Polignac number, because 2201112022221 - 2¹⁸ = 2201111760077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2201112022194 and 2201112022203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201112022229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14136685 + ... + 14291538.

It is an arithmetic number, because the mean of its divisors is an integer number (151522433920).

Almost surely, 2^{2201112022221} is an apocalyptic number.

2201112022221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2201112022221 is a deficient number, since it is larger than the sum of its proper divisors (1435426391859).

2201112022221 is a wasteful number, since it uses less digits than its factorization.

2201112022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28429465 (or 28429462 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2201112022221 its reverse (1222202111022), we get a palindrome (3423314133243).

The spelling of 2201112022221 in words is "two trillion, two hundred one billion, one hundred twelve million, twenty-two thousand, two hundred twenty-one".