12212011221020 has 192 divisors, whose sum is σ = 28459749427200. Its totient is φ = 4372979804160.

The previous prime is 12212011220987. The next prime is 12212011221031. The reversal of 12212011221020 is 2012211021221.

It is a self number, because there is not a number n which added to its sum of digits gives 12212011221020.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1739847071 + ... + 1739854089.

It is an arithmetic number, because the mean of its divisors is an integer number (148227861600).

Almost surely, 2^{12212011221020} is an apocalyptic number.

12212011221020 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 12212011221020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14229874713600).

12212011221020 is an abundant number, since it is smaller than the sum of its proper divisors (16247738206180).

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

12212011221020 is a wasteful number, since it uses less digits than its factorization.

12212011221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8028 (or 8026 counting only the distinct ones).

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

Adding to 12212011221020 its reverse (2012211021221), we get a palindrome (14224222242241).

The spelling of 12212011221020 in words is "twelve trillion, two hundred twelve billion, eleven million, two hundred twenty-one thousand, twenty".