12220947004400 has 60 divisors (see below), whose sum is σ = 29361483356400. Its totient is φ = 4888269219840.

The previous prime is 12220947004381. The next prime is 12220947004423. The reversal of 12220947004400 is 440074902221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18869141 + ... + 19506059.

It is an arithmetic number, because the mean of its divisors is an integer number (489358055940).

Almost surely, 2^{12220947004400} is an apocalyptic number.

12220947004400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12220947004400 is an abundant number, since it is smaller than the sum of its proper divisors (17140536352000).

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

12220947004400 is a wasteful number, since it uses less digits than its factorization.

12220947004400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684906 (or 684895 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The spelling of 12220947004400 in words is "twelve trillion, two hundred twenty billion, nine hundred forty-seven million, four thousand, four hundred".