1221930080000 has 720 divisors, whose sum is σ = 3817097887680. Its totient is φ = 380534784000.

The previous prime is 1221930079957. The next prime is 1221930080053. The reversal of 1221930080000 is 800391221.

It is a super-2 number, since 2×1221930080000² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 552158894 + ... + 552161106.

It is an arithmetic number, because the mean of its divisors is an integer number (5301524844).

Almost surely, 2^{1221930080000} is an apocalyptic number.

1221930080000 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 1221930080000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1908548943840).

1221930080000 is an abundant number, since it is smaller than the sum of its proper divisors (2595167807680).

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

1221930080000 is an equidigital number, since it uses as much as digits as its factorization.

1221930080000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2302 (or 2273 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 1221930080000 in words is "one trillion, two hundred twenty-one billion, nine hundred thirty million, eighty thousand".