150201721 has 2 divisors, whose sum is σ = 150201722. Its totient is φ = 150201720.

The previous prime is 150201719. The next prime is 150201761. The reversal of 150201721 is 127102051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94848121 + 55353600 = 9739^2 + 7440^2 .

It is a cyclic number.

It is not a de Polignac number, because 150201721 - 2¹ = 150201719 is a prime.

Together with 150201719, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (150201761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75100860 + 75100861.

It is an arithmetic number, because the mean of its divisors is an integer number (75100861).

Almost surely, 2^150201721 is an apocalyptic number.

It is an amenable number.

150201721 is a deficient number, since it is larger than the sum of its proper divisors (1).

150201721 is an equidigital number, since it uses as much as digits as its factorization.

150201721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 150201721 is about 12255.6811724196. The cubic root of 150201721 is about 531.5673562911.

Adding to 150201721 its reverse (127102051), we get a palindrome (277303772).

The spelling of 150201721 in words is "one hundred fifty million, two hundred one thousand, seven hundred twenty-one".