202120020120 has 64 divisors (see below), whose sum is σ = 619261355520. Its totient is φ = 52751890304.

The previous prime is 202120020101. The next prime is 202120020121. The reversal of 202120020120 is 21020021202.

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 = 202120020096 and 202120020105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202120020121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17912802 + ... + 17924081.

It is an arithmetic number, because the mean of its divisors is an integer number (9675958680).

Almost surely, 2^202120020120 is an apocalyptic number.

202120020120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202120020120 is an abundant number, since it is smaller than the sum of its proper divisors (417141335400).

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

202120020120 is a wasteful number, since it uses less digits than its factorization.

202120020120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35836944 (or 35836940 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 202120020120 its reverse (21020021202), we get a palindrome (223140041322).

The spelling of 202120020120 in words is "two hundred two billion, one hundred twenty million, twenty thousand, one hundred twenty".