2021011220000 has 60 divisors (see below), whose sum is σ = 4971990802086. Its totient is φ = 808404480000.

The previous prime is 2021011219921. The next prime is 2021011220017. The reversal of 2021011220000 is 221101202.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 88677692944 + 1932333527056 = 297788^2 + 1390084^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 50505281 + ... + 50545280.

Almost surely, 2^{2021011220000} is an apocalyptic number.

2021011220000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021011220000 is an abundant number, since it is smaller than the sum of its proper divisors (2950979582086).

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

2021011220000 is an equidigital number, since it uses as much as digits as its factorization.

2021011220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101050591 (or 101050568 counting only the distinct ones).

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

Adding to 2021011220000 its reverse (221101202), we get a palindrome (2021232321202).

The spelling of 2021011220000 in words is "two trillion, twenty-one billion, eleven million, two hundred twenty thousand".