21110410250 has 32 divisors (see below), whose sum is σ = 40108550976. Its totient is φ = 8318125200.

The previous prime is 21110410247. The next prime is 21110410259. The reversal of 21110410250 is 5201401112.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21110410259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 613412 + ... + 646911.

It is an arithmetic number, because the mean of its divisors is an integer number (1253392218).

Almost surely, 2^21110410250 is an apocalyptic number.

21110410250 is a deficient number, since it is larger than the sum of its proper divisors (18998140726).

21110410250 is a wasteful number, since it uses less digits than its factorization.

21110410250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260407 (or 1260397 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 21110410250 its reverse (5201401112), we get a palindrome (26311811362).

The spelling of 21110410250 in words is "twenty-one billion, one hundred ten million, four hundred ten thousand, two hundred fifty".