2220102021221 has 16 divisors (see below), whose sum is σ = 2575412688000. Its totient is φ = 1874335921920.

The previous prime is 2220102021187. The next prime is 2220102021239. The reversal of 2220102021221 is 1221202010222.

It is a happy number.

It is not a de Polignac number, because 2220102021221 - 2¹⁸ = 2220101759077 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2220102021221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220102021421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4077905 + ... + 4590153.

It is an arithmetic number, because the mean of its divisors is an integer number (160963293000).

Almost surely, 2^{2220102021221} is an apocalyptic number.

It is an amenable number.

2220102021221 is a deficient number, since it is larger than the sum of its proper divisors (355310666779).

2220102021221 is an equidigital number, since it uses as much as digits as its factorization.

2220102021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521564.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2220102021221 its reverse (1221202010222), we get a palindrome (3441304031443).

The spelling of 2220102021221 in words is "two trillion, two hundred twenty billion, one hundred two million, twenty-one thousand, two hundred twenty-one".