150221399 has 2 divisors, whose sum is σ = 150221400. Its totient is φ = 150221398.

The previous prime is 150221387. The next prime is 150221411. The reversal of 150221399 is 993122051.

150221399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (150221387) and next prime (150221411).

It is an emirp because it is prime and its reverse (993122051) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 150221399 - 2⁸ = 150221143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (150221329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75110699 + 75110700.

It is an arithmetic number, because the mean of its divisors is an integer number (75110700).

Almost surely, 2^150221399 is an apocalyptic number.

150221399 is a deficient number, since it is larger than the sum of its proper divisors (1).

150221399 is an equidigital number, since it uses as much as digits as its factorization.

150221399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 150221399 is about 12256.4839574814. The cubic root of 150221399 is about 531.5905689094.

The spelling of 150221399 in words is "one hundred fifty million, two hundred twenty-one thousand, three hundred ninety-nine".