2220220120221 has 10 divisors (see below), whose sum is σ = 3316625117982. Its totient is φ = 1480146746760.

The previous prime is 2220220120213. The next prime is 2220220120247. The reversal of 2220220120221 is 1220210220222.

2220220120221 is a `hidden beast` number, since 2 + 220 + 2 + 201 + 20 + 221 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1232353092996 + 987867027225 = 1110114^2 + 993915^2 .

It is not a de Polignac number, because 2220220120221 - 2³ = 2220220120213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2220220120194 and 2220220120203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220220121221) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 13705062390 + ... + 13705062551.

Almost surely, 2^{2220220120221} is an apocalyptic number.

It is an amenable number.

2220220120221 is a deficient number, since it is larger than the sum of its proper divisors (1096404997761).

2220220120221 is an equidigital number, since it uses as much as digits as its factorization.

2220220120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27410124953 (or 27410124944 counting only the distinct ones).

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

Adding to 2220220120221 its reverse (1220210220222), we get a palindrome (3440430340443).

The spelling of 2220220120221 in words is "two trillion, two hundred twenty billion, two hundred twenty million, one hundred twenty thousand, two hundred twenty-one".