12212210121020 has 192 divisors, whose sum is σ = 32321902771200. Its totient is φ = 3851298130176.

The previous prime is 12212210120989. The next prime is 12212210121053. The reversal of 12212210121020 is 2012101221221.

It is a super-3 number, since 3×12212210121020³ (a number of 40 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12212210121020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 24995999 + ... + 25479881.

It is an arithmetic number, because the mean of its divisors is an integer number (168343243600).

Almost surely, 2^{12212210121020} is an apocalyptic number.

12212210121020 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 12212210121020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16160951385600).

12212210121020 is an abundant number, since it is smaller than the sum of its proper divisors (20109692650180).

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

12212210121020 is a wasteful number, since it uses less digits than its factorization.

12212210121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484209 (or 484193 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12212210121020 its reverse (2012101221221), we get a palindrome (14224311342241).

The spelling of 12212210121020 in words is "twelve trillion, two hundred twelve billion, two hundred ten million, one hundred twenty-one thousand, twenty".