12222211222220 has 48 divisors (see below), whose sum is σ = 25960075585920. Its totient is φ = 4833014022144.

The previous prime is 12222211222211. The next prime is 12222211222327. The reversal of 12222211222220 is 2222211222221.

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, 8532812 + ... + 9861708.

It is an arithmetic number, because the mean of its divisors is an integer number (540834908040).

Almost surely, 2^{12222211222220} is an apocalyptic number.

12222211222220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12222211222220 is an abundant number, since it is smaller than the sum of its proper divisors (13737864363700).

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

12222211222220 is a wasteful number, since it uses less digits than its factorization.

12222211222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334162 (or 1334160 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 12222211222220 its reverse (2222211222221), we get a palindrome (14444422444441).

Subtracting from 12222211222220 its reverse (2222211222221), we obtain a palindrome (9999999999999).

The spelling of 12222211222220 in words is "twelve trillion, two hundred twenty-two billion, two hundred eleven million, two hundred twenty-two thousand, two hundred twenty".