220111002002221 has 12 divisors (see below), whose sum is σ = 241941487836832. Its totient is φ = 200099839401000.

The previous prime is 220111002002201. The next prime is 220111002002233. The reversal of 220111002002221 is 122200200111022.

It is a happy number.

It is not a de Polignac number, because 220111002002221 - 2⁵ = 220111002002189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220111002002195 and 220111002002204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220111002002201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18271726 + ... + 27822256.

Almost surely, 2^{220111002002221} is an apocalyptic number.

It is an amenable number.

220111002002221 is a deficient number, since it is larger than the sum of its proper divisors (21830485834611).

220111002002221 is a wasteful number, since it uses less digits than its factorization.

220111002002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9741024 (or 9741013 counting only the distinct ones).

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

Adding to 220111002002221 its reverse (122200200111022), we get a palindrome (342311202113243).

The spelling of 220111002002221 in words is "two hundred twenty trillion, one hundred eleven billion, two million, two thousand, two hundred twenty-one".