12023224240 has 40 divisors (see below), whose sum is σ = 29169391968. Its totient is φ = 4600189440.

The previous prime is 12023224237. The next prime is 12023224253. The reversal of 12023224240 is 4242232021.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×12023224240² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3265341 + ... + 3269020.

Almost surely, 2^12023224240 is an apocalyptic number.

12023224240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12023224240 is an abundant number, since it is smaller than the sum of its proper divisors (17146167728).

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

12023224240 is a wasteful number, since it uses less digits than its factorization.

12023224240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6534397 (or 6534391 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 12023224240 its reverse (4242232021), we get a palindrome (16265456261).

The spelling of 12023224240 in words is "twelve billion, twenty-three million, two hundred twenty-four thousand, two hundred forty".