12011403220 has 24 divisors (see below), whose sum is σ = 26037623808. Its totient is φ = 4649575200.

The previous prime is 12011403199. The next prime is 12011403233. The reversal of 12011403220 is 2230411021.

It is a junction number, because it is equal to n+sod(n) for n = 12011403194 and 12011403203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9685996 + ... + 9687235.

It is an arithmetic number, because the mean of its divisors is an integer number (1084900992).

Almost surely, 2^12011403220 is an apocalyptic number.

12011403220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12011403220 is an abundant number, since it is smaller than the sum of its proper divisors (14026220588).

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

12011403220 is a wasteful number, since it uses less digits than its factorization.

12011403220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19373271 (or 19373269 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12011403220 its reverse (2230411021), we get a palindrome (14241814241).

The spelling of 12011403220 in words is "twelve billion, eleven million, four hundred three thousand, two hundred twenty".