40021231224 has 128 divisors (see below), whose sum is σ = 118022184000. Its totient is φ = 11190165504.

The previous prime is 40021231171. The next prime is 40021231279. The reversal of 40021231224 is 42213212004.

It is a self number, because there is not a number n which added to its sum of digits gives 40021231224.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23722 + ... + 283910.

Almost surely, 2^40021231224 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 40021231224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59011092000).

40021231224 is an abundant number, since it is smaller than the sum of its proper divisors (78000952776).

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

40021231224 is a wasteful number, since it uses less digits than its factorization.

40021231224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260257 (or 260253 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 40021231224 its reverse (42213212004), we get a palindrome (82234443228).

The spelling of 40021231224 in words is "forty billion, twenty-one million, two hundred thirty-one thousand, two hundred twenty-four".