202020212021120 has 64 divisors (see below), whose sum is σ = 483346898274240. Its totient is φ = 80742440232960.

The previous prime is 202020212021093. The next prime is 202020212021143. The reversal of 202020212021120 is 21120212020202.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127423607 + ... + 128999286.

It is an arithmetic number, because the mean of its divisors is an integer number (7552295285535).

Almost surely, 2^{202020212021120} is an apocalyptic number.

202020212021120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202020212021120 is an abundant number, since it is smaller than the sum of its proper divisors (281326686253120).

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

202020212021120 is a wasteful number, since it uses less digits than its factorization.

202020212021120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256424143 (or 256424131 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 202020212021120 its reverse (21120212020202), we get a palindrome (223140424041322).

The spelling of 202020212021120 in words is "two hundred two trillion, twenty billion, two hundred twelve million, twenty-one thousand, one hundred twenty".