12212120112220 has 24 divisors (see below), whose sum is σ = 29309088269664. Its totient is φ = 4187012609856.

The previous prime is 12212120112197. The next prime is 12212120112263. The reversal of 12212120112220 is 2221102121221.

12212120112220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43614714547 + ... + 43614714826.

It is an arithmetic number, because the mean of its divisors is an integer number (1221212011236).

Almost surely, 2^{12212120112220} is an apocalyptic number.

12212120112220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12212120112220 is an abundant number, since it is smaller than the sum of its proper divisors (17096968157444).

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

12212120112220 is a wasteful number, since it uses less digits than its factorization.

12212120112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87229429389 (or 87229429387 counting only the distinct ones).

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

Adding to 12212120112220 its reverse (2221102121221), we get a palindrome (14433222233441).

It can be divided in two parts, 122121 and 20112220, that added together give a triangular number (20234341 = T₆₃₆₁).

The spelling of 12212120112220 in words is "twelve trillion, two hundred twelve billion, one hundred twenty million, one hundred twelve thousand, two hundred twenty".