12212022212220 has 96 divisors (see below), whose sum is σ = 34250736925440. Its totient is φ = 3251108044800.

The previous prime is 12212022212149. The next prime is 12212022212227. The reversal of 12212022212220 is 2221222021221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212022212227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88782819 + ... + 88920261.

It is an arithmetic number, because the mean of its divisors is an integer number (356778509640).

Almost surely, 2^{12212022212220} is an apocalyptic number.

12212022212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12212022212220 is an abundant number, since it is smaller than the sum of its proper divisors (22038714713220).

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

12212022212220 is a wasteful number, since it uses less digits than its factorization.

12212022212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139915 (or 139913 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 12212022212220 its reverse (2221222021221), we get a palindrome (14433244233441).

The spelling of 12212022212220 in words is "twelve trillion, two hundred twelve billion, twenty-two million, two hundred twelve thousand, two hundred twenty".