200121221101320 has 192 divisors, whose sum is σ = 650953096326000. Its totient is φ = 53319798097920.

The previous prime is 200121221101301. The next prime is 200121221101327. The reversal of 200121221101320 is 23101122121002.

200121221101320 is a `hidden beast` number, since 2 + 0 + 0 + 1 + 21 + 221 + 101 + 320 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 12182291818596 + 187938929282724 = 3490314^2 + 13709082^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 200121221101293 and 200121221101302.

It is not an unprimeable number, because it can be changed into a prime (200121221101327) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2537863014 + ... + 2537941866.

Almost surely, 2^{200121221101320} is an apocalyptic number.

200121221101320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200121221101320 is an abundant number, since it is smaller than the sum of its proper divisors (450831875224680).

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

200121221101320 is a wasteful number, since it uses less digits than its factorization.

200121221101320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84840 (or 84833 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 200121221101320 its reverse (23101122121002), we get a palindrome (223222343222322).

The spelling of 200121221101320 in words is "two hundred trillion, one hundred twenty-one billion, two hundred twenty-one million, one hundred one thousand, three hundred twenty".