2220111011221 has 4 divisors (see below), whose sum is σ = 2336958959200. Its totient is φ = 2103263063244.

The previous prime is 2220111011191. The next prime is 2220111011227. The reversal of 2220111011221 is 1221101110222.

2220111011221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2220111011221 - 2¹³ = 2220111003029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2220111011195 and 2220111011204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220111011227) 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, 58423973961 + ... + 58423973998.

It is an arithmetic number, because the mean of its divisors is an integer number (584239739800).

Almost surely, 2^{2220111011221} is an apocalyptic number.

It is an amenable number.

2220111011221 is a deficient number, since it is larger than the sum of its proper divisors (116847947979).

2220111011221 is a wasteful number, since it uses less digits than its factorization.

2220111011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116847947978.

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

Adding to 2220111011221 its reverse (1221101110222), we get a palindrome (3441212121443).

Subtracting from 2220111011221 its reverse (1221101110222), we obtain a palindrome (999009900999).

The spelling of 2220111011221 in words is "two trillion, two hundred twenty billion, one hundred eleven million, eleven thousand, two hundred twenty-one".