12222111100220 has 72 divisors (see below), whose sum is σ = 30302496511056. Its totient is φ = 4127894217216.

The previous prime is 12222111100219. The next prime is 12222111100229. The reversal of 12222111100220 is 2200111122221.

It is a super-2 number, since 2×12222111100220² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222111100229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93005549 + ... + 93136868.

It is an arithmetic number, because the mean of its divisors is an integer number (420868007098).

Almost surely, 2^{12222111100220} is an apocalyptic number.

12222111100220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12222111100220 is an abundant number, since it is smaller than the sum of its proper divisors (18080385410836).

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

12222111100220 is a wasteful number, since it uses less digits than its factorization.

12222111100220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186142507 (or 186142498 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12222111100220 its reverse (2200111122221), we get a palindrome (14422222222441).

The spelling of 12222111100220 in words is "twelve trillion, two hundred twenty-two billion, one hundred eleven million, one hundred thousand, two hundred twenty".