12419861220 has 144 divisors (see below), whose sum is σ = 42074410560. Its totient is φ = 3057181056.

The previous prime is 12419861213. The next prime is 12419861243. The reversal of 12419861220 is 2216891421.

12419861220 is a `hidden beast` number, since 1 + 2 + 4 + 19 + 8 + 612 + 20 = 666.

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

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 35110 + ... + 161469.

Almost surely, 2^12419861220 is an apocalyptic number.

12419861220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12419861220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21037205280).

12419861220 is an abundant number, since it is smaller than the sum of its proper divisors (29654549340).

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

12419861220 is a wasteful number, since it uses less digits than its factorization.

12419861220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196616 (or 196602 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The spelling of 12419861220 in words is "twelve billion, four hundred nineteen million, eight hundred sixty-one thousand, two hundred twenty".