200421442110577 has 2 divisors, whose sum is σ = 200421442110578. Its totient is φ = 200421442110576.

The previous prime is 200421442110511. The next prime is 200421442110583. The reversal of 200421442110577 is 775011244124002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128921581844496 + 71499860266081 = 11354364^2 + 8455759^2 .

It is a cyclic number.

It is not a de Polignac number, because 200421442110577 - 2²³ = 200421433721969 is a prime.

It is not a weakly prime, because it can be changed into another prime (200421442110377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100210721055288 + 100210721055289.

It is an arithmetic number, because the mean of its divisors is an integer number (100210721055289).

Almost surely, 2^{200421442110577} is an apocalyptic number.

It is an amenable number.

200421442110577 is a deficient number, since it is larger than the sum of its proper divisors (1).

200421442110577 is an equidigital number, since it uses as much as digits as its factorization.

200421442110577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 125440, while the sum is 40.

Adding to 200421442110577 its reverse (775011244124002), we get a palindrome (975432686234579).

The spelling of 200421442110577 in words is "two hundred trillion, four hundred twenty-one billion, four hundred forty-two million, one hundred ten thousand, five hundred seventy-seven".