21101045050 has 24 divisors (see below), whose sum is σ = 39251969856. Its totient is φ = 8439552240.

The previous prime is 21101045039. The next prime is 21101045071. The reversal of 21101045050 is 5054010112.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 727119 + ... + 755581.

It is an arithmetic number, because the mean of its divisors is an integer number (1635498744).

Almost surely, 2^21101045050 is an apocalyptic number.

21101045050 is a deficient number, since it is larger than the sum of its proper divisors (18150924806).

21101045050 is a wasteful number, since it uses less digits than its factorization.

21101045050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43302 (or 43297 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

Adding to 21101045050 its reverse (5054010112), we get a palindrome (26155055162).

The spelling of 21101045050 in words is "twenty-one billion, one hundred one million, forty-five thousand, fifty".