1222205004 has 192 divisors, whose sum is σ = 3547514880. Its totient is φ = 361912320.

The previous prime is 1222204943. The next prime is 1222205011. The reversal of 1222205004 is 4005022221.

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 63 ways as a sum of consecutive naturals, for example, 4349344 + ... + 4349624.

It is an arithmetic number, because the mean of its divisors is an integer number (18476640).

Almost surely, 2^1222205004 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 1222205004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1773757440).

1222205004 is an abundant number, since it is smaller than the sum of its proper divisors (2325309876).

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

1222205004 is a wasteful number, since it uses less digits than its factorization.

1222205004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437 (or 429 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 1222205004 is about 34960.0486841766. The cubic root of 1222205004 is about 1069.1730892442.

Adding to 1222205004 its reverse (4005022221), we get a palindrome (5227227225).

The spelling of 1222205004 in words is "one billion, two hundred twenty-two million, two hundred five thousand, four".