1222505004 has 48 divisors (see below), whose sum is σ = 3272467968. Its totient is φ = 347952768.

The previous prime is 1222504967. The next prime is 1222505017. The reversal of 1222505004 is 4005052221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5577 + ... + 49760.

It is an arithmetic number, because the mean of its divisors is an integer number (68176416).

Almost surely, 2^1222505004 is an apocalyptic number.

1222505004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1222505004 is an abundant number, since it is smaller than the sum of its proper divisors (2049962964).

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

1222505004 is a wasteful number, since it uses less digits than its factorization.

1222505004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55614 (or 55612 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 1222505004 is about 34964.3390327917. The cubic root of 1222505004 is about 1069.2605611183.

Adding to 1222505004 its reverse (4005052221), we get a palindrome (5227557225).

The spelling of 1222505004 in words is "one billion, two hundred twenty-two million, five hundred five thousand, four".