200212310021 has 4 divisors (see below), whose sum is σ = 200213456352. Its totient is φ = 200211163692.

The previous prime is 200212310017. The next prime is 200212310029. The reversal of 200212310021 is 120013212002.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 200212310021 - 2² = 200212310017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200212309978 and 200212310005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200212310029) 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, 250715 + ... + 680648.

It is an arithmetic number, because the mean of its divisors is an integer number (50053364088).

Almost surely, 2^200212310021 is an apocalyptic number.

It is an amenable number.

200212310021 is a deficient number, since it is larger than the sum of its proper divisors (1146331).

200212310021 is an equidigital number, since it uses as much as digits as its factorization.

200212310021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146330.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 200212310021 its reverse (120013212002), we get a palindrome (320225522023).

The spelling of 200212310021 in words is "two hundred billion, two hundred twelve million, three hundred ten thousand, twenty-one".