122215151 has 4 divisors (see below), whose sum is σ = 123425304. Its totient is φ = 121005000.

The previous prime is 122215141. The next prime is 122215183. The reversal of 122215151 is 151512221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 122215151 - 2¹⁴ = 122198767 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 (122215111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 604925 + ... + 605126.

It is an arithmetic number, because the mean of its divisors is an integer number (30856326).

Almost surely, 2^122215151 is an apocalyptic number.

122215151 is a deficient number, since it is larger than the sum of its proper divisors (1210153).

122215151 is a wasteful number, since it uses less digits than its factorization.

122215151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210152.

The product of its digits is 200, while the sum is 20.

The square root of 122215151 is about 11055.0961551675. The cubic root of 122215151 is about 496.2589468531.

Adding to 122215151 its reverse (151512221), we get a palindrome (273727372).

The spelling of 122215151 in words is "one hundred twenty-two million, two hundred fifteen thousand, one hundred fifty-one".