2220111002221 has 4 divisors (see below), whose sum is σ = 2537269716832. Its totient is φ = 1902952287612.

The previous prime is 2220111002209. The next prime is 2220111002237. The reversal of 2220111002221 is 1222001110222.

It is a happy number.

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 2220111002221 - 2⁹ = 2220111001709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2220111002195 and 2220111002204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220111002251) 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, 158579357295 + ... + 158579357308.

It is an arithmetic number, because the mean of its divisors is an integer number (634317429208).

Almost surely, 2^{2220111002221} is an apocalyptic number.

It is an amenable number.

2220111002221 is a deficient number, since it is larger than the sum of its proper divisors (317158714611).

2220111002221 is an equidigital number, since it uses as much as digits as its factorization.

2220111002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317158714610.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2220111002221 its reverse (1222001110222), we get a palindrome (3442112112443).

The spelling of 2220111002221 in words is "two trillion, two hundred twenty billion, one hundred eleven million, two thousand, two hundred twenty-one".