4223111231440 has 40 divisors (see below), whose sum is σ = 9818823731400. Its totient is φ = 1689228988416.

The previous prime is 4223111231387. The next prime is 4223111231447. The reversal of 4223111231440 is 441321113224.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 21824743824 + 4201286487616 = 147732^2 + 2049704^2 .

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

It is a super-2 number, since 2×4223111231440² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4223111231399 and 4223111231408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4223111231447) by changing a digit.

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, 13077036 + ... + 13396084.

It is an arithmetic number, because the mean of its divisors is an integer number (245470593285).

Almost surely, 2^{4223111231440} is an apocalyptic number.

4223111231440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4223111231440 is an abundant number, since it is smaller than the sum of its proper divisors (5595712499960).

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

4223111231440 is a wasteful number, since it uses less digits than its factorization.

4223111231440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484519 (or 484513 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 4223111231440 its reverse (441321113224), we get a palindrome (4664432344664).

The spelling of 4223111231440 in words is "four trillion, two hundred twenty-three billion, one hundred eleven million, two hundred thirty-one thousand, four hundred forty".