200020330121 has 4 divisors (see below), whose sum is σ = 201790421652. Its totient is φ = 198250238592.

The previous prime is 200020330109. The next prime is 200020330171. The reversal of 200020330121 is 121033020002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15666026896 + 184354303225 = 125164^2 + 429365^2 .

It is a cyclic number.

It is not a de Polignac number, because 200020330121 - 2⁶ = 200020330057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200020330096 and 200020330105.

It is not an unprimeable number, because it can be changed into a prime (200020330171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 885045596 + ... + 885045821.

It is an arithmetic number, because the mean of its divisors is an integer number (50447605413).

Almost surely, 2^200020330121 is an apocalyptic number.

It is an amenable number.

200020330121 is a deficient number, since it is larger than the sum of its proper divisors (1770091531).

200020330121 is a wasteful number, since it uses less digits than its factorization.

200020330121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1770091530.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 200020330121 its reverse (121033020002), we get a palindrome (321053350123).

The spelling of 200020330121 in words is "two hundred billion, twenty million, three hundred thirty thousand, one hundred twenty-one".