20212201011212 has 72 divisors (see below), whose sum is σ = 41325817881600. Its totient is φ = 8624584545696.

The previous prime is 20212201011193. The next prime is 20212201011283. The reversal of 20212201011212 is 21211010221202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 284166989 + ... + 284238107.

It is an arithmetic number, because the mean of its divisors is an integer number (573969692800).

Almost surely, 2^{20212201011212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20212201011212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20662908940800).

20212201011212 is an abundant number, since it is smaller than the sum of its proper divisors (21113616870388).

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

20212201011212 is a wasteful number, since it uses less digits than its factorization.

20212201011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77443 (or 77434 counting only the distinct ones).

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

Adding to 20212201011212 its reverse (21211010221202), we get a palindrome (41423211232414).

The spelling of 20212201011212 in words is "twenty trillion, two hundred twelve billion, two hundred one million, eleven thousand, two hundred twelve".