12101222112220 has 48 divisors (see below), whose sum is σ = 26232812476416. Its totient is φ = 4684257288000.

The previous prime is 12101222112209. The next prime is 12101222112227. The reversal of 12101222112220 is 2221122210121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101222112227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40816315 + ... + 41111725.

It is an arithmetic number, because the mean of its divisors is an integer number (546516926592).

Almost surely, 2^{12101222112220} is an apocalyptic number.

12101222112220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12101222112220 is an abundant number, since it is smaller than the sum of its proper divisors (14131590364196).

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

12101222112220 is a wasteful number, since it uses less digits than its factorization.

12101222112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361522 (or 361520 counting only the distinct ones).

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

Adding to 12101222112220 its reverse (2221122210121), we get a palindrome (14322344322341).

The spelling of 12101222112220 in words is "twelve trillion, one hundred one billion, two hundred twenty-two million, one hundred twelve thousand, two hundred twenty".