43221013021240 has 16 divisors (see below), whose sum is σ = 97247279297880. Its totient is φ = 17288405208480.

The previous prime is 43221013021223. The next prime is 43221013021253. The reversal of 43221013021240 is 4212031012234.

It is a super-2 number, since 2×43221013021240² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 540262662726 + ... + 540262662805.

Almost surely, 2^{43221013021240} is an apocalyptic number.

43221013021240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43221013021240 is an abundant number, since it is smaller than the sum of its proper divisors (54026266276640).

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

43221013021240 is a wasteful number, since it uses less digits than its factorization.

43221013021240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080525325542 (or 1080525325538 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 43221013021240 its reverse (4212031012234), we get a palindrome (47433044033474).

The spelling of 43221013021240 in words is "forty-three trillion, two hundred twenty-one billion, thirteen million, twenty-one thousand, two hundred forty".