2220022120221 has 12 divisors (see below), whose sum is σ = 3284910780060. Its totient is φ = 1443916825920.

The previous prime is 2220022120219. The next prime is 2220022120229. The reversal of 2220022120221 is 1220212200222.

2220022120221 is a `hidden beast` number, since 2 + 2 + 200 + 221 + 20 + 221 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 697609152900 + 1522412967321 = 835230^2 + 1233861^2 .

It is not a de Polignac number, because 2220022120221 - 2¹ = 2220022120219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2220022120194 and 2220022120203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220022120229) 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, 3008159686 + ... + 3008160423.

It is an arithmetic number, because the mean of its divisors is an integer number (273742565005).

Almost surely, 2^{2220022120221} is an apocalyptic number.

It is an amenable number.

2220022120221 is a deficient number, since it is larger than the sum of its proper divisors (1064888659839).

2220022120221 is a wasteful number, since it uses less digits than its factorization.

2220022120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6016320156 (or 6016320153 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 2220022120221 its reverse (1220212200222), we get a palindrome (3440234320443).

The spelling of 2220022120221 in words is "two trillion, two hundred twenty billion, twenty-two million, one hundred twenty thousand, two hundred twenty-one".