21151041050 has 48 divisors (see below), whose sum is σ = 41158115712. Its totient is φ = 8078409600.

The previous prime is 21151041031. The next prime is 21151041061. The reversal of 21151041050 is 5014015112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13412 + ... + 206111.

It is an arithmetic number, because the mean of its divisors is an integer number (857460744).

Almost surely, 2^21151041050 is an apocalyptic number.

21151041050 is a deficient number, since it is larger than the sum of its proper divisors (20007074662).

21151041050 is a wasteful number, since it uses less digits than its factorization.

21151041050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219623 (or 219618 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 20.

Adding to 21151041050 its reverse (5014015112), we get a palindrome (26165056162).

The spelling of 21151041050 in words is "twenty-one billion, one hundred fifty-one million, forty-one thousand, fifty".