200121020123321 has 32 divisors (see below), whose sum is σ = 223075499116032. Its totient is φ = 178001015132160.

The previous prime is 200121020123287. The next prime is 200121020123327. The reversal of 200121020123321 is 123321020121002.

It is not a de Polignac number, because 200121020123321 - 2¹⁰ = 200121020122297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200121020123293 and 200121020123302.

It is not an unprimeable number, because it can be changed into a prime (200121020123327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64202510 + ... + 67247336.

It is an arithmetic number, because the mean of its divisors is an integer number (6971109347376).

Almost surely, 2^{200121020123321} is an apocalyptic number.

It is an amenable number.

200121020123321 is a deficient number, since it is larger than the sum of its proper divisors (22954478992711).

200121020123321 is a wasteful number, since it uses less digits than its factorization.

200121020123321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3045509.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 200121020123321 its reverse (123321020121002), we get a palindrome (323442040244323).

The spelling of 200121020123321 in words is "two hundred trillion, one hundred twenty-one billion, twenty million, one hundred twenty-three thousand, three hundred twenty-one".