200312320021 has 16 divisors (see below), whose sum is σ = 223632465408. Its totient is φ = 177844892400.

The previous prime is 200312320009. The next prime is 200312320073. The reversal of 200312320021 is 120023213002.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200312320021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200312319977 and 200312320004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200312320001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4607616 + ... + 4650886.

It is an arithmetic number, because the mean of its divisors is an integer number (13977029088).

Almost surely, 2^200312320021 is an apocalyptic number.

It is an amenable number.

200312320021 is a deficient number, since it is larger than the sum of its proper divisors (23320145387).

200312320021 is a wasteful number, since it uses less digits than its factorization.

200312320021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53112.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 200312320021 its reverse (120023213002), we get a palindrome (320335533023).

The spelling of 200312320021 in words is "two hundred billion, three hundred twelve million, three hundred twenty thousand, twenty-one".