1216301227596 has 864 divisors, whose sum is σ = 4140601920000. Its totient is φ = 293811867648.

The previous prime is 1216301227579. The next prime is 1216301227619. The reversal of 1216301227596 is 6957221036121.

1216301227596 is a `hidden beast` number, since 1 + 2 + 1 + 6 + 30 + 1 + 2 + 27 + 596 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 3485103630 + ... + 3485103978.

Almost surely, 2^{1216301227596} 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 1216301227596, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2070300960000).

1216301227596 is an abundant number, since it is smaller than the sum of its proper divisors (2924300692404).

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

1216301227596 is a wasteful number, since it uses less digits than its factorization.

1216301227596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543 (or 525 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 1216301227596 in words is "one trillion, two hundred sixteen billion, three hundred one million, two hundred twenty-seven thousand, five hundred ninety-six".