21241522343040 has 128 divisors (see below), whose sum is σ = 71270897457600. Its totient is φ = 5366279319552.

The previous prime is 21241522343009. The next prime is 21241522343047. The reversal of 21241522343040 is 4034322514212.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 21241522342992 and 21241522343010.

It is not an unprimeable number, because it can be changed into a prime (21241522343047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 291102807 + ... + 291175766.

Almost surely, 2^{21241522343040} is an apocalyptic number.

21241522343040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21241522343040 is an abundant number, since it is smaller than the sum of its proper divisors (50029375114560).

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

21241522343040 is a wasteful number, since it uses less digits than its factorization.

21241522343040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582278614 (or 582278602 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 21241522343040 its reverse (4034322514212), we get a palindrome (25275844857252).

The spelling of 21241522343040 in words is "twenty-one trillion, two hundred forty-one billion, five hundred twenty-two million, three hundred forty-three thousand, forty".