2020001221100 has 18 divisors (see below), whose sum is σ = 4383402650004. Its totient is φ = 808000488400.

The previous prime is 2020001221061. The next prime is 2020001221151. The reversal of 2020001221100 is 11221000202.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10100006006 + ... + 10100006205.

Almost surely, 2^{2020001221100} is an apocalyptic number.

2020001221100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2020001221100 is an abundant number, since it is smaller than the sum of its proper divisors (2363401428904).

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

2020001221100 is a wasteful number, since it uses less digits than its factorization.

2020001221100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20200012225 (or 20200012218 counting only the distinct ones).

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

Adding to 2020001221100 its reverse (11221000202), we get a palindrome (2031222221302).

The spelling of 2020001221100 in words is "two trillion, twenty billion, one million, two hundred twenty-one thousand, one hundred".