21041340250 has 32 divisors (see below), whose sum is σ = 45016448256. Its totient is φ = 7214173200.

The previous prime is 21041340233. The next prime is 21041340323. The reversal of 21041340250 is 5204314012.

It is an unprimeable number.

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, 6010062 + ... + 6013561.

It is an arithmetic number, because the mean of its divisors is an integer number (1406764008).

Almost surely, 2^21041340250 is an apocalyptic number.

21041340250 is an abundant number, since it is smaller than the sum of its proper divisors (23975108006).

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

21041340250 is a wasteful number, since it uses less digits than its factorization.

21041340250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12023647 (or 12023637 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 21041340250 its reverse (5204314012), we get a palindrome (26245654262).

The spelling of 21041340250 in words is "twenty-one billion, forty-one million, three hundred forty thousand, two hundred fifty".