20210120020000 has 120 divisors (see below), whose sum is σ = 51063710441436. Its totient is φ = 7865559936000.

The previous prime is 20210120019997. The next prime is 20210120020001. The reversal of 20210120020000 is 2002101202.

It can be written as a sum of positive squares in 10 ways, for example, as 131081650704 + 20079038369296 = 362052^2 + 4480964^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (20210120020001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12915487 + ... + 14395486.

Almost surely, 2^{20210120020000} is an apocalyptic number.

20210120020000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20210120020000 is an abundant number, since it is smaller than the sum of its proper divisors (30853590421436).

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

20210120020000 is an equidigital number, since it uses as much as digits as its factorization.

20210120020000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27311040 (or 27311017 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20210120020000 its reverse (2002101202), we get a palindrome (20212122121202).

The spelling of 20210120020000 in words is "twenty trillion, two hundred ten billion, one hundred twenty million, twenty thousand".