1222003404 has 36 divisors (see below), whose sum is σ = 3147240096. Its totient is φ = 399648288.

The previous prime is 1222003379. The next prime is 1222003459. The reversal of 1222003404 is 4043002221.

1222003404 is a `hidden beast` number, since 122 + 200 + 340 + 4 = 666.

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 an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 318324 + ... + 322139.

It is an arithmetic number, because the mean of its divisors is an integer number (87423336).

Almost surely, 2^1222003404 is an apocalyptic number.

It is an amenable number.

1222003404 is an abundant number, since it is smaller than the sum of its proper divisors (1925236692).

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

1222003404 is a wasteful number, since it uses less digits than its factorization.

1222003404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640526 (or 640521 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1222003404 is about 34957.1652740894. The cubic root of 1222003404 is about 1069.1143001032.

Adding to 1222003404 its reverse (4043002221), we get a palindrome (5265005625).

The spelling of 1222003404 in words is "one billion, two hundred twenty-two million, three thousand, four hundred four".