2222021221220 has 48 divisors (see below), whose sum is σ = 5045851480320. Its totient is φ = 818727212544.

The previous prime is 2222021221201. The next prime is 2222021221261. The reversal of 2222021221220 is 221221202222.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2222021221192 and 2222021221201.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69509090 + ... + 69541049.

It is an arithmetic number, because the mean of its divisors is an integer number (105121905840).

Almost surely, 2^{2222021221220} is an apocalyptic number.

2222021221220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2222021221220 is an abundant number, since it is smaller than the sum of its proper divisors (2823830259100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2222021221220 is a wasteful number, since it uses less digits than its factorization.

2222021221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139050212 (or 139050210 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 2222021221220 its reverse (221221202222), we get a palindrome (2443242423442).

The spelling of 2222021221220 in words is "two trillion, two hundred twenty-two billion, twenty-one million, two hundred twenty-one thousand, two hundred twenty".