12212200221220 has 192 divisors, whose sum is σ = 27370957307904. Its totient is φ = 4569755581440.

The previous prime is 12212200221217. The next prime is 12212200221223. The reversal of 12212200221220 is 2212200221221.

It is an interprime number because it is at equal distance from previous prime (12212200221217) and next prime (12212200221223).

It is not an unprimeable number, because it can be changed into a prime (12212200221223) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 840069792 + ... + 840084328.

It is an arithmetic number, because the mean of its divisors is an integer number (142557069312).

Almost surely, 2^{12212200221220} is an apocalyptic number.

12212200221220 is a gapful number since it is divisible by the number (10) 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 12212200221220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13685478653952).

12212200221220 is an abundant number, since it is smaller than the sum of its proper divisors (15158757086684).

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

12212200221220 is a wasteful number, since it uses less digits than its factorization.

12212200221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14978 (or 14976 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 12212200221220 its reverse (2212200221221), we get a palindrome (14424400442441).

Subtracting from 12212200221220 its reverse (2212200221221), we obtain a palindrome (9999999999999).

The spelling of 12212200221220 in words is "twelve trillion, two hundred twelve billion, two hundred million, two hundred twenty-one thousand, two hundred twenty".