12222212122220 has 24 divisors (see below), whose sum is σ = 25666728646608. Its totient is φ = 4888869003200.

The previous prime is 12222212122189. The next prime is 12222212122231. The reversal of 12222212122220 is 2222121222221.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6847430 + ... + 8445810.

It is an arithmetic number, because the mean of its divisors is an integer number (1069447026942).

Almost surely, 2^{12222212122220} is an apocalyptic number.

12222212122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12222212122220 is an abundant number, since it is smaller than the sum of its proper divisors (13444516524388).

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

12222212122220 is a wasteful number, since it uses less digits than its factorization.

12222212122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980721 (or 1980719 counting only the distinct ones).

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

Adding to 12222212122220 its reverse (2222121222221), we get a palindrome (14444333344441).

The spelling of 12222212122220 in words is "twelve trillion, two hundred twenty-two billion, two hundred twelve million, one hundred twenty-two thousand, two hundred twenty".