152210221 has 2 divisors, whose sum is σ = 152210222. Its totient is φ = 152210220.

The previous prime is 152210213. The next prime is 152210269. The reversal of 152210221 is 122012251.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99720196 + 52490025 = 9986^2 + 7245^2 .

It is a cyclic number.

It is not a de Polignac number, because 152210221 - 2³ = 152210213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 152210195 and 152210204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (152210291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76105110 + 76105111.

It is an arithmetic number, because the mean of its divisors is an integer number (76105111).

Almost surely, 2^152210221 is an apocalyptic number.

It is an amenable number.

152210221 is a deficient number, since it is larger than the sum of its proper divisors (1).

152210221 is an equidigital number, since it uses as much as digits as its factorization.

152210221 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 16.

The square root of 152210221 is about 12337.3506475256. The cubic root of 152210221 is about 533.9262488916.

Adding to 152210221 its reverse (122012251), we get a palindrome (274222472).

The spelling of 152210221 in words is "one hundred fifty-two million, two hundred ten thousand, two hundred twenty-one".