150221216417 has 2 divisors, whose sum is σ = 150221216418. Its totient is φ = 150221216416.

The previous prime is 150221216413. The next prime is 150221216437. The reversal of 150221216417 is 714612122051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128944909921 + 21276306496 = 359089^2 + 145864^2 .

It is a cyclic number.

It is not a de Polignac number, because 150221216417 - 2² = 150221216413 is a prime.

It is not a weakly prime, because it can be changed into another prime (150221216413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75110608208 + 75110608209.

It is an arithmetic number, because the mean of its divisors is an integer number (75110608209).

Almost surely, 2^150221216417 is an apocalyptic number.

It is an amenable number.

150221216417 is a deficient number, since it is larger than the sum of its proper divisors (1).

150221216417 is an equidigital number, since it uses as much as digits as its factorization.

150221216417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 32.

Adding to 150221216417 its reverse (714612122051), we get a palindrome (864833338468).

The spelling of 150221216417 in words is "one hundred fifty billion, two hundred twenty-one million, two hundred sixteen thousand, four hundred seventeen".