122212146 has 16 divisors (see below), whose sum is σ = 279342144. Its totient is φ = 34917744.

The previous prime is 122212141. The next prime is 122212157. The reversal of 122212146 is 641212221.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (122212141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1454865 + ... + 1454948.

It is an arithmetic number, because the mean of its divisors is an integer number (17458884).

Almost surely, 2^122212146 is an apocalyptic number.

122212146 is an abundant number, since it is smaller than the sum of its proper divisors (157129998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122212146 is a wasteful number, since it uses less digits than its factorization.

122212146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2909825.

The product of its digits is 384, while the sum is 21.

The square root of 122212146 is about 11054.9602441619. The cubic root of 122212146 is about 496.2548795169.

Adding to 122212146 its reverse (641212221), we get a palindrome (763424367).

The spelling of 122212146 in words is "one hundred twenty-two million, two hundred twelve thousand, one hundred forty-six".