1222866257760 has 576 divisors, whose sum is σ = 5271699464640. Its totient is φ = 263069614080.

The previous prime is 1222866257731. The next prime is 1222866257773. The reversal of 1222866257760 is 677526682221.

1222866257760 is a `hidden beast` number, since 1 + 2 + 2 + 2 + 8 + 6 + 6 + 2 + 577 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 1222866257697 and 1222866257706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3428650 + ... + 3768470.

It is an arithmetic number, because the mean of its divisors is an integer number (9152256015).

Almost surely, 2^{1222866257760} is an apocalyptic number.

1222866257760 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 1222866257760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2635849732320).

1222866257760 is an abundant number, since it is smaller than the sum of its proper divisors (4048833206880).

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

1222866257760 is a wasteful number, since it uses less digits than its factorization.

1222866257760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339876 (or 339855 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 54.

The spelling of 1222866257760 in words is "one trillion, two hundred twenty-two billion, eight hundred sixty-six million, two hundred fifty-seven thousand, seven hundred sixty".