1222561579008 has 240 divisors, whose sum is σ = 4064508854784. Its totient is φ = 317547479040.

The previous prime is 1222561578991. The next prime is 1222561579027. The reversal of 1222561579008 is 8009751652221.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3623191 + ... + 3946217.

Almost surely, 2^{1222561579008} 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 1222561579008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2032254427392).

1222561579008 is an abundant number, since it is smaller than the sum of its proper divisors (2841947275776).

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

1222561579008 is an equidigital number, since it uses as much as digits as its factorization.

1222561579008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323076 (or 323050 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 48.

The spelling of 1222561579008 in words is "one trillion, two hundred twenty-two billion, five hundred sixty-one million, five hundred seventy-nine thousand, eight".