21233124103240 has 64 divisors (see below), whose sum is σ = 55629640546560. Its totient is φ = 7142571121920.

The previous prime is 21233124103211. The next prime is 21233124103253. The reversal of 21233124103240 is 4230142133212.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 21233124103199 and 21233124103208.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 715386916 + ... + 715416595.

It is an arithmetic number, because the mean of its divisors is an integer number (869213133540).

Almost surely, 2^{21233124103240} is an apocalyptic number.

21233124103240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21233124103240 is an abundant number, since it is smaller than the sum of its proper divisors (34396516443320).

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

21233124103240 is a wasteful number, since it uses less digits than its factorization.

21233124103240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1430803582 (or 1430803578 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 21233124103240 its reverse (4230142133212), we get a palindrome (25463266236452).

The spelling of 21233124103240 in words is "twenty-one trillion, two hundred thirty-three billion, one hundred twenty-four million, one hundred three thousand, two hundred forty".