122212404 has 36 divisors (see below), whose sum is σ = 311822784. Its totient is φ = 40355472.

The previous prime is 122212403. The next prime is 122212417. The reversal of 122212404 is 404212221.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122212403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12012 + ... + 19715.

It is an arithmetic number, because the mean of its divisors is an integer number (8661744).

Almost surely, 2^122212404 is an apocalyptic number.

It is an amenable number.

122212404 is an abundant number, since it is smaller than the sum of its proper divisors (189610380).

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

122212404 is a wasteful number, since it uses less digits than its factorization.

122212404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31844 (or 31839 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 122212404 is about 11054.9719131258. The cubic root of 122212404 is about 496.2552287284.

Adding to 122212404 its reverse (404212221), we get a palindrome (526424625).

The spelling of 122212404 in words is "one hundred twenty-two million, two hundred twelve thousand, four hundred four".