1224421404 has 12 divisors (see below), whose sum is σ = 2856983304. Its totient is φ = 408140464.

The previous prime is 1224421403. The next prime is 1224421409. The reversal of 1224421404 is 4041244221.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224421403) 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, 51017547 + ... + 51017570.

It is an arithmetic number, because the mean of its divisors is an integer number (238081942).

Almost surely, 2^1224421404 is an apocalyptic number.

It is an amenable number.

1224421404 is an abundant number, since it is smaller than the sum of its proper divisors (1632561900).

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

1224421404 is a wasteful number, since it uses less digits than its factorization.

1224421404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102035124 (or 102035122 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 1224421404 is about 34991.7333666110. The cubic root of 1224421404 is about 1069.8189940420.

Adding to 1224421404 its reverse (4041244221), we get a palindrome (5265665625).

The spelling of 1224421404 in words is "one billion, two hundred twenty-four million, four hundred twenty-one thousand, four hundred four".