200221121699 has 2 divisors, whose sum is σ = 200221121700. Its totient is φ = 200221121698.

The previous prime is 200221121651. The next prime is 200221121701. The reversal of 200221121699 is 996121122002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200221121699 is a prime.

Together with 200221121701, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (200221124699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100110560849 + 100110560850.

It is an arithmetic number, because the mean of its divisors is an integer number (100110560850).

Almost surely, 2^200221121699 is an apocalyptic number.

200221121699 is a deficient number, since it is larger than the sum of its proper divisors (1).

200221121699 is an equidigital number, since it uses as much as digits as its factorization.

200221121699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 35.

The spelling of 200221121699 in words is "two hundred billion, two hundred twenty-one million, one hundred twenty-one thousand, six hundred ninety-nine".