202111120020 has 24 divisors (see below), whose sum is σ = 565911136224. Its totient is φ = 53896298656.

The previous prime is 202111119983. The next prime is 202111120063. The reversal of 202111120020 is 20021111202.

202111120020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 202111119978 and 202111120005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1684259274 + ... + 1684259393.

It is an arithmetic number, because the mean of its divisors is an integer number (23579630676).

Almost surely, 2^202111120020 is an apocalyptic number.

202111120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202111120020 is an abundant number, since it is smaller than the sum of its proper divisors (363800016204).

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

202111120020 is a wasteful number, since it uses less digits than its factorization.

202111120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3368518679 (or 3368518677 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 202111120020 its reverse (20021111202), we get a palindrome (222132231222).

The spelling of 202111120020 in words is "two hundred two billion, one hundred eleven million, one hundred twenty thousand, twenty".