1225122204000 has 768 divisors, whose sum is σ = 4531006771200. Its totient is φ = 287539200000.

The previous prime is 1225122203959. The next prime is 1225122204023. The reversal of 1225122204000 is 4022215221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 306202000 + ... + 306206000.

It is an arithmetic number, because the mean of its divisors is an integer number (5899748400).

Almost surely, 2^{1225122204000} is an apocalyptic number.

1225122204000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1225122204000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2265503385600).

1225122204000 is an abundant number, since it is smaller than the sum of its proper divisors (3305884567200).

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

1225122204000 is a wasteful number, since it uses less digits than its factorization.

1225122204000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4144 (or 4126 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

Adding to 1225122204000 its reverse (4022215221), we get a palindrome (1229144419221).

The spelling of 1225122204000 in words is "one trillion, two hundred twenty-five billion, one hundred twenty-two million, two hundred four thousand".