20212211021200 has 240 divisors, whose sum is σ = 53515024640640. Its totient is φ = 7274926080000.

The previous prime is 20212211021173. The next prime is 20212211021207. The reversal of 20212211021200 is 212011221202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (20212211021207) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 2474859517 + ... + 2474867683.

It is an arithmetic number, because the mean of its divisors is an integer number (222979269336).

Almost surely, 2^{20212211021200} is an apocalyptic number.

20212211021200 is a gapful number since it is divisible by the number (20) 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 20212211021200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26757512320320).

20212211021200 is an abundant number, since it is smaller than the sum of its proper divisors (33302813619440).

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

20212211021200 is a wasteful number, since it uses less digits than its factorization.

20212211021200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13866 (or 13855 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20212211021200 its reverse (212011221202), we get a palindrome (20424222242402).

The spelling of 20212211021200 in words is "twenty trillion, two hundred twelve billion, two hundred eleven million, twenty-one thousand, two hundred".