20021120020000 has 120 divisors (see below), whose sum is σ = 53732682500112. Its totient is φ = 7280407200000.

The previous prime is 20021120019997. The next prime is 20021120020007. The reversal of 20021120020000 is 2002112002.

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 (20021120020007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 45282546 + ... + 45722545.

Almost surely, 2^{20021120020000} is an apocalyptic number.

20021120020000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20021120020000 is an abundant number, since it is smaller than the sum of its proper divisors (33711562480112).

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

20021120020000 is an equidigital number, since it uses as much as digits as its factorization.

20021120020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91005132 (or 91005109 counting only the distinct ones).

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

Adding to 20021120020000 its reverse (2002112002), we get a palindrome (20023122132002).

20021120020000 divided by its reverse (2002112002) gives a 4-th power (10000 = 10⁴).

It can be divided in two parts, 20021 and 120020000, that added together give a palindrome (120040021).

The spelling of 20021120020000 in words is "twenty trillion, twenty-one billion, one hundred twenty million, twenty thousand".