200121021030320 has 160 divisors (see below), whose sum is σ = 522924952660992. Its totient is φ = 70669142793216.

The previous prime is 200121021030283. The next prime is 200121021030373. The reversal of 200121021030320 is 23030120121002.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 187646909 + ... + 188710371.

Almost surely, 2^{200121021030320} is an apocalyptic number.

200121021030320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 200121021030320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261462476330496).

200121021030320 is an abundant number, since it is smaller than the sum of its proper divisors (322803931630672).

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

200121021030320 is a wasteful number, since it uses less digits than its factorization.

200121021030320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071379 (or 1071373 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 200121021030320 its reverse (23030120121002), we get a palindrome (223151141151322).

The spelling of 200121021030320 in words is "two hundred trillion, one hundred twenty-one billion, twenty-one million, thirty thousand, three hundred twenty".