150800021 has 2 divisors, whose sum is σ = 150800022. Its totient is φ = 150800020.

The previous prime is 150800003. The next prime is 150800033. The reversal of 150800021 is 120008051.

150800021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87422500 + 63377521 = 9350^2 + 7961^2 .

It is an emirp because it is prime and its reverse (120008051) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 150800021 - 2¹⁰ = 150798997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (150800051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75400010 + 75400011.

It is an arithmetic number, because the mean of its divisors is an integer number (75400011).

Almost surely, 2^150800021 is an apocalyptic number.

It is an amenable number.

150800021 is a deficient number, since it is larger than the sum of its proper divisors (1).

150800021 is an equidigital number, since it uses as much as digits as its factorization.

150800021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 150800021 is about 12280.0660014513. The cubic root of 150800021 is about 532.2722203888.

Adding to 150800021 its reverse (120008051), we get a palindrome (270808072).

The spelling of 150800021 in words is "one hundred fifty million, eight hundred thousand, twenty-one".