200321400121 has 4 divisors (see below), whose sum is σ = 200393023012. Its totient is φ = 200249777232.

The previous prime is 200321400113. The next prime is 200321400143. The reversal of 200321400121 is 121004123002.

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 53123335225 + 147198064896 = 230485^2 + 383664^2 .

It is a cyclic number.

It is not a de Polignac number, because 200321400121 - 2³ = 200321400113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200321400095 and 200321400104.

It is not an unprimeable number, because it can be changed into a prime (200321400101) 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, 35807250 + ... + 35812843.

It is an arithmetic number, because the mean of its divisors is an integer number (50098255753).

Almost surely, 2^200321400121 is an apocalyptic number.

It is an amenable number.

200321400121 is a deficient number, since it is larger than the sum of its proper divisors (71622891).

200321400121 is an equidigital number, since it uses as much as digits as its factorization.

200321400121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71622890.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 200321400121 its reverse (121004123002), we get a palindrome (321325523123).

The spelling of 200321400121 in words is "two hundred billion, three hundred twenty-one million, four hundred thousand, one hundred twenty-one".