200121020221023 has 48 divisors (see below), whose sum is σ = 317760621235200. Its totient is φ = 120355375420800.

The previous prime is 200121020220971. The next prime is 200121020221037. The reversal of 200121020221023 is 320122020121002.

200121020221023 is a `hidden beast` number, since 20 + 0 + 1 + 210 + 202 + 210 + 23 = 666.

It is not a de Polignac number, because 200121020221023 - 2¹² = 200121020216927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200121020220987 and 200121020221005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200121020211023) 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, 388592203 + ... + 389106851.

It is an arithmetic number, because the mean of its divisors is an integer number (6620012942400).

Almost surely, 2^{200121020221023} is an apocalyptic number.

200121020221023 is a deficient number, since it is larger than the sum of its proper divisors (117639601014177).

200121020221023 is a wasteful number, since it uses less digits than its factorization.

200121020221023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544780 (or 544777 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 200121020221023 its reverse (320122020121002), we get a palindrome (520243040342025).

The spelling of 200121020221023 in words is "two hundred trillion, one hundred twenty-one billion, twenty million, two hundred twenty-one thousand, twenty-three".