200121202112020 has 48 divisors (see below), whose sum is σ = 481123278478080. Its totient is φ = 68494070237184.

The previous prime is 200121202111993. The next prime is 200121202112033. The reversal of 200121202112020 is 20211202121002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 200121202111985 and 200121202112003.

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, 1238599600 + ... + 1238761159.

It is an arithmetic number, because the mean of its divisors is an integer number (10023401634960).

Almost surely, 2^{200121202112020} is an apocalyptic number.

200121202112020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200121202112020 is an abundant number, since it is smaller than the sum of its proper divisors (281002076366060).

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

200121202112020 is a wasteful number, since it uses less digits than its factorization.

200121202112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2477361352 (or 2477361350 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 200121202112020 its reverse (20211202121002), we get a palindrome (220332404233022).

The spelling of 200121202112020 in words is "two hundred trillion, one hundred twenty-one billion, two hundred two million, one hundred twelve thousand, twenty".