2020221212100 has 576 divisors, whose sum is σ = 7568855895552. Its totient is φ = 404600832000.

The previous prime is 2020221212083. The next prime is 2020221212111. The reversal of 2020221212100 is 12121220202.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2020221212100.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 41389710 + ... + 41438490.

Almost surely, 2^{2020221212100} is an apocalyptic number.

2020221212100 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 2020221212100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3784427947776).

2020221212100 is an abundant number, since it is smaller than the sum of its proper divisors (5548634683452).

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

2020221212100 is a wasteful number, since it uses less digits than its factorization.

2020221212100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48896 (or 48889 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2020221212100 its reverse (12121220202), we get a palindrome (2032342432302).

The spelling of 2020221212100 in words is "two trillion, twenty billion, two hundred twenty-one million, two hundred twelve thousand, one hundred".