12208821216 has 24 divisors (see below), whose sum is σ = 32048155944. Its totient is φ = 4069607040.

The previous prime is 12208821181. The next prime is 12208821221. The reversal of 12208821216 is 61212880221.

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63587515 + ... + 63587706.

It is an arithmetic number, because the mean of its divisors is an integer number (1335339831).

Almost surely, 2^12208821216 is an apocalyptic number.

12208821216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12208821216 is an abundant number, since it is smaller than the sum of its proper divisors (19839334728).

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

12208821216 is a wasteful number, since it uses less digits than its factorization.

12208821216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127175234 (or 127175226 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 33.

The spelling of 12208821216 in words is "twelve billion, two hundred eight million, eight hundred twenty-one thousand, two hundred sixteen".