1222042404 has 72 divisors (see below), whose sum is σ = 3141923904. Its totient is φ = 369406400.

The previous prime is 1222042403. The next prime is 1222042421. The reversal of 1222042404 is 4042402221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222042403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 808009 + ... + 809519.

It is an arithmetic number, because the mean of its divisors is an integer number (43637832).

Almost surely, 2^1222042404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222042404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1570961952).

1222042404 is an abundant number, since it is smaller than the sum of its proper divisors (1919881500).

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

1222042404 is a wasteful number, since it uses less digits than its factorization.

1222042404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2097 (or 2084 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 1222042404 is about 34957.7230951903. The cubic root of 1222042404 is about 1069.1256735069.

Adding to 1222042404 its reverse (4042402221), we get a palindrome (5264444625).

The spelling of 1222042404 in words is "one billion, two hundred twenty-two million, forty-two thousand, four hundred four".