200421221207 has 2 divisors, whose sum is σ = 200421221208. Its totient is φ = 200421221206.

The previous prime is 200421221201. The next prime is 200421221239. The reversal of 200421221207 is 702122124002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 200421221207 - 2¹⁰ = 200421220183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200421221201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100210610603 + 100210610604.

It is an arithmetic number, because the mean of its divisors is an integer number (100210610604).

Almost surely, 2^200421221207 is an apocalyptic number.

200421221207 is a deficient number, since it is larger than the sum of its proper divisors (1).

200421221207 is an equidigital number, since it uses as much as digits as its factorization.

200421221207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 23.

Adding to 200421221207 its reverse (702122124002), we get a palindrome (902543345209).

The spelling of 200421221207 in words is "two hundred billion, four hundred twenty-one million, two hundred twenty-one thousand, two hundred seven".