200221121701 has 2 divisors, whose sum is σ = 200221121702. Its totient is φ = 200221121700.

The previous prime is 200221121699. The next prime is 200221121747. The reversal of 200221121701 is 107121122002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199286352225 + 934769476 = 446415^2 + 30574^2 .

It is a cyclic number.

It is not a de Polignac number, because 200221121701 - 2¹ = 200221121699 is a prime.

Together with 200221121699, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200221125701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100110560850 + 100110560851.

It is an arithmetic number, because the mean of its divisors is an integer number (100110560851).

Almost surely, 2^200221121701 is an apocalyptic number.

It is an amenable number.

200221121701 is a deficient number, since it is larger than the sum of its proper divisors (1).

200221121701 is an equidigital number, since it uses as much as digits as its factorization.

200221121701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 19.

Adding to 200221121701 its reverse (107121122002), we get a palindrome (307342243703).

The spelling of 200221121701 in words is "two hundred billion, two hundred twenty-one million, one hundred twenty-one thousand, seven hundred one".