200020220121 has 4 divisors (see below), whose sum is σ = 266693626832. Its totient is φ = 133346813412.

The previous prime is 200020220093. The next prime is 200020220131. The reversal of 200020220121 is 121022020002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 200020220121 - 2⁵ = 200020220089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200020220097 and 200020220106.

It is not an unprimeable number, because it can be changed into a prime (200020220131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33336703351 + ... + 33336703356.

It is an arithmetic number, because the mean of its divisors is an integer number (66673406708).

Almost surely, 2^200020220121 is an apocalyptic number.

It is an amenable number.

200020220121 is a deficient number, since it is larger than the sum of its proper divisors (66673406711).

200020220121 is an equidigital number, since it uses as much as digits as its factorization.

200020220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66673406710.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 200020220121 its reverse (121022020002), we get a palindrome (321042240123).

The spelling of 200020220121 in words is "two hundred billion, twenty million, two hundred twenty thousand, one hundred twenty-one".