12040201224 has 96 divisors (see below), whose sum is σ = 33356133720. Its totient is φ = 3922034688.

The previous prime is 12040201183. The next prime is 12040201231. The reversal of 12040201224 is 42210204021.

It can be written as a sum of positive squares in 4 ways, for example, as 11595413124 + 444788100 = 107682^2 + 21090^2 .

It is a super-2 number, since 2×12040201224² (a number of 21 digits) contains 22 as substring.

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 = 12040201197 and 12040201206.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 974574 + ... + 986850.

Almost surely, 2^12040201224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12040201224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16678066860).

12040201224 is an abundant number, since it is smaller than the sum of its proper divisors (21315932496).

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

12040201224 is a wasteful number, since it uses less digits than its factorization.

12040201224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12599 (or 12592 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 12040201224 its reverse (42210204021), we get a palindrome (54250405245).

The spelling of 12040201224 in words is "twelve billion, forty million, two hundred one thousand, two hundred twenty-four".