4012522217440 has 144 divisors (see below), whose sum is σ = 10421628464016. Its totient is φ = 1458830039040.

The previous prime is 4012522217413. The next prime is 4012522217467. The reversal of 4012522217440 is 447122252104.

It is an interprime number because it is at equal distance from previous prime (4012522217413) and next prime (4012522217467).

It is a super-2 number, since 2×4012522217440² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4012522217396 and 4012522217405.

It is a congruent number.

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, 126734092 + ... + 126765748.

It is an arithmetic number, because the mean of its divisors is an integer number (72372419889).

Almost surely, 2^{4012522217440} is an apocalyptic number.

4012522217440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4012522217440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5210814232008).

4012522217440 is an abundant number, since it is smaller than the sum of its proper divisors (6409106246576).

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

4012522217440 is a wasteful number, since it uses less digits than its factorization.

4012522217440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38241 (or 38222 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 34.

Adding to 4012522217440 its reverse (447122252104), we get a palindrome (4459644469544).

The spelling of 4012522217440 in words is "four trillion, twelve billion, five hundred twenty-two million, two hundred seventeen thousand, four hundred forty".