12212021210112 has 220 divisors, whose sum is σ = 36906870918456. Its totient is φ = 4021627207680.

The previous prime is 12212021210101. The next prime is 12212021210141. The reversal of 12212021210112 is 21101212021221.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5997412 + ... + 7771292.

Almost surely, 2^{12212021210112} is an apocalyptic number.

12212021210112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12212021210112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18453435459228).

12212021210112 is an abundant number, since it is smaller than the sum of its proper divisors (24694849708344).

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

12212021210112 is an equidigital number, since it uses as much as digits as its factorization.

12212021210112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1773996 (or 1773969 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12212021210112 its reverse (21101212021221), we get a palindrome (33313233231333).

The spelling of 12212021210112 in words is "twelve trillion, two hundred twelve billion, twenty-one million, two hundred ten thousand, one hundred twelve".