12042203220 has 72 divisors (see below), whose sum is σ = 36572532360. Its totient is φ = 3207340800.

The previous prime is 12042203213. The next prime is 12042203227. The reversal of 12042203220 is 2230224021.

12042203220 is a `hidden beast` number, since 1 + 20 + 422 + 0 + 3 + 220 = 666.

It is an interprime number because it is at equal distance from previous prime (12042203213) and next prime (12042203227).

It can be written as a sum of positive squares in 4 ways, for example, as 2620006596 + 9422196624 = 51186^2 + 97068^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12042203193 and 12042203202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12042203227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108870 + ... + 189570.

Almost surely, 2^12042203220 is an apocalyptic number.

12042203220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12042203220 is an abundant number, since it is smaller than the sum of its proper divisors (24530329140).

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

12042203220 is a wasteful number, since it uses less digits than its factorization.

12042203220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81545 (or 81540 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 12042203220 its reverse (2230224021), we get a palindrome (14272427241).

The spelling of 12042203220 in words is "twelve billion, forty-two million, two hundred three thousand, two hundred twenty".