202001121020 has 48 divisors (see below), whose sum is σ = 428066735040. Its totient is φ = 80064746496.

The previous prime is 202001120989. The next prime is 202001121053. The reversal of 202001121020 is 20121100202.

It is a happy number.

202001121020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 202001120992 and 202001121010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11139521 + ... + 11157639.

It is an arithmetic number, because the mean of its divisors is an integer number (8918056980).

Almost surely, 2^202001121020 is an apocalyptic number.

202001121020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202001121020 is an abundant number, since it is smaller than the sum of its proper divisors (226065614020).

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

202001121020 is a wasteful number, since it uses less digits than its factorization.

202001121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23174 (or 23172 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 202001121020 its reverse (20121100202), we get a palindrome (222122221222).

The spelling of 202001121020 in words is "two hundred two billion, one million, one hundred twenty-one thousand, twenty".