12231331020 has 96 divisors (see below), whose sum is σ = 40291473600. Its totient is φ = 3069821952.

The previous prime is 12231330989. The next prime is 12231331031. The reversal of 12231331020 is 2013313221.

12231331020 is a `hidden beast` number, since 1 + 22 + 313 + 310 + 20 = 666.

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 = 12231330984 and 12231331002.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 657015 + ... + 675374.

It is an arithmetic number, because the mean of its divisors is an integer number (419702850).

Almost surely, 2^12231331020 is an apocalyptic number.

12231331020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12231331020 is an abundant number, since it is smaller than the sum of its proper divisors (28060142580).

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

12231331020 is a wasteful number, since it uses less digits than its factorization.

12231331020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332424 (or 1332416 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 12231331020 its reverse (2013313221), we get a palindrome (14244644241).

The spelling of 12231331020 in words is "twelve billion, two hundred thirty-one million, three hundred thirty-one thousand, twenty".