12354881220 has 72 divisors (see below), whose sum is σ = 40883431680. Its totient is φ = 2995122240.

The previous prime is 12354881213. The next prime is 12354881221. The reversal of 12354881220 is 2218845321.

It is a happy number.

12354881220 is a `hidden beast` number, since 1 + 2 + 354 + 8 + 81 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (12354881221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3117940 + ... + 3121899.

It is an arithmetic number, because the mean of its divisors is an integer number (567825440).

Almost surely, 2^12354881220 is an apocalyptic number.

12354881220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12354881220 is an abundant number, since it is smaller than the sum of its proper divisors (28528550460).

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

12354881220 is a wasteful number, since it uses less digits than its factorization.

12354881220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6239865 (or 6239860 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The spelling of 12354881220 in words is "twelve billion, three hundred fifty-four million, eight hundred eighty-one thousand, two hundred twenty".