165222301 has 4 divisors (see below), whose sum is σ = 166523392. Its totient is φ = 163921212.

The previous prime is 165222293. The next prime is 165222311. The reversal of 165222301 is 103222561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 103222561 = 13 ⋅7940197.

It is a cyclic number.

It is not a de Polignac number, because 165222301 - 2³ = 165222293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165222311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 650355 + ... + 650608.

It is an arithmetic number, because the mean of its divisors is an integer number (41630848).

Almost surely, 2^165222301 is an apocalyptic number.

It is an amenable number.

165222301 is a deficient number, since it is larger than the sum of its proper divisors (1301091).

165222301 is a wasteful number, since it uses less digits than its factorization.

165222301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1301090.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 165222301 is about 12853.8827207969. The cubic root of 165222301 is about 548.7268634901.

Adding to 165222301 its reverse (103222561), we get a palindrome (268444862).

The spelling of 165222301 in words is "one hundred sixty-five million, two hundred twenty-two thousand, three hundred one".