12147602220 has 144 divisors (see below), whose sum is σ = 40333168512. Its totient is φ = 2941125120.

The previous prime is 12147602183. The next prime is 12147602239. The reversal of 12147602220 is 2220674121.

12147602220 is a `hidden beast` number, since 12 + 1 + 47 + 602 + 2 + 2 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 100189 + ... + 185291.

It is an arithmetic number, because the mean of its divisors is an integer number (280091448).

Almost surely, 2^12147602220 is an apocalyptic number.

12147602220 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 12147602220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20166584256).

12147602220 is an abundant number, since it is smaller than the sum of its proper divisors (28185566292).

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

12147602220 is a wasteful number, since it uses less digits than its factorization.

12147602220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85192 (or 85187 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The spelling of 12147602220 in words is "twelve billion, one hundred forty-seven million, six hundred two thousand, two hundred twenty".