12216011598 has 40 divisors (see below), whose sum is σ = 31283334192. Its totient is φ = 3490288704.

The previous prime is 12216011593. The next prime is 12216011603. The reversal of 12216011598 is 89511061221.

12216011598 is a `hidden beast` number, since 1 + 2 + 2 + 1 + 60 + 1 + 1 + 598 = 666.

It is an interprime number because it is at equal distance from previous prime (12216011593) and next prime (12216011603).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12216011593) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5385115 + ... + 5387382.

Almost surely, 2^12216011598 is an apocalyptic number.

12216011598 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12216011598 is an abundant number, since it is smaller than the sum of its proper divisors (19067322594).

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

12216011598 is a wasteful number, since it uses less digits than its factorization.

12216011598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10772518 (or 10772509 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 36.

The spelling of 12216011598 in words is "twelve billion, two hundred sixteen million, eleven thousand, five hundred ninety-eight".