12212011122220 has 72 divisors (see below), whose sum is σ = 32126983139664. Its totient is φ = 3864900219264.

The previous prime is 12212011122197. The next prime is 12212011122239. The reversal of 12212011122220 is 2222111021221.

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 23 ways as a sum of consecutive naturals, for example, 479265562 + ... + 479291041.

It is an arithmetic number, because the mean of its divisors is an integer number (446208099162).

Almost surely, 2^{12212011122220} is an apocalyptic number.

12212011122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12212011122220 is an abundant number, since it is smaller than the sum of its proper divisors (19914972017444).

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

12212011122220 is a wasteful number, since it uses less digits than its factorization.

12212011122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 958556639 (or 958556630 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12212011122220 its reverse (2222111021221), we get a palindrome (14434122143441).

The spelling of 12212011122220 in words is "twelve trillion, two hundred twelve billion, eleven million, one hundred twenty-two thousand, two hundred twenty".