12143032220 has 48 divisors (see below), whose sum is σ = 28570455648. Its totient is φ = 4296303360.

The previous prime is 12143032207. The next prime is 12143032249. The reversal of 12143032220 is 2223034121.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12143032192 and 12143032201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 737747 + ... + 754026.

It is an arithmetic number, because the mean of its divisors is an integer number (595217826).

Almost surely, 2^12143032220 is an apocalyptic number.

12143032220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12143032220 is an abundant number, since it is smaller than the sum of its proper divisors (16427423428).

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

12143032220 is a wasteful number, since it uses less digits than its factorization.

12143032220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491830 (or 1491828 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 12143032220 its reverse (2223034121), we get a palindrome (14366066341).

The spelling of 12143032220 in words is "twelve billion, one hundred forty-three million, thirty-two thousand, two hundred twenty".