20002021101200 has 240 divisors, whose sum is σ = 50098509115200. Its totient is φ = 7667661619200.

The previous prime is 20002021101031. The next prime is 20002021101233. The reversal of 20002021101200 is 210112020002.

It is a happy 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 47 ways as a sum of consecutive naturals, for example, 1440749459 + ... + 1440763341.

It is an arithmetic number, because the mean of its divisors is an integer number (208743787980).

Almost surely, 2^{20002021101200} is an apocalyptic number.

20002021101200 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 20002021101200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25049254557600).

20002021101200 is an abundant number, since it is smaller than the sum of its proper divisors (30096488014000).

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

20002021101200 is a wasteful number, since it uses less digits than its factorization.

20002021101200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15490 (or 15479 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20002021101200 its reverse (210112020002), we get a palindrome (20212133121202).

The spelling of 20002021101200 in words is "twenty trillion, two billion, twenty-one million, one hundred one thousand, two hundred".