200121512000 has 56 divisors (see below), whose sum is σ = 495600944280. Its totient is φ = 80048601600.

The previous prime is 200121511991. The next prime is 200121512047. The reversal of 200121512000 is 215121002.

It can be written as a sum of positive squares in 4 ways, for example, as 1754604544 + 198366907456 = 41888^2 + 445384^2 .

It is a super-2 number, since 2×200121512000² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12499595 + ... + 12515594.

Almost surely, 2^200121512000 is an apocalyptic number.

200121512000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200121512000 is an abundant number, since it is smaller than the sum of its proper divisors (295479432280).

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

200121512000 is an equidigital number, since it uses as much as digits as its factorization.

200121512000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25015216 (or 25015196 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 14.

Adding to 200121512000 its reverse (215121002), we get a palindrome (200336633002).

The spelling of 200121512000 in words is "two hundred billion, one hundred twenty-one million, five hundred twelve thousand".