21300050 has 24 divisors (see below), whose sum is σ = 40543536. Its totient is φ = 8321040.

The previous prime is 21300029. The next prime is 21300061. The reversal of 21300050 is 5000312.

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, 2804 + ... + 7103.

It is an arithmetic number, because the mean of its divisors is an integer number (1689314).

Almost surely, 2^21300050 is an apocalyptic number.

21300050 is a deficient number, since it is larger than the sum of its proper divisors (19243486).

21300050 is a wasteful number, since it uses less digits than its factorization.

21300050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9962 (or 9957 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 11.

The square root of 21300050 is about 4615.1977205749. The cubic root of 21300050 is about 277.2002010761.

Adding to 21300050 its reverse (5000312), we get a palindrome (26300362).

The spelling of 21300050 in words is "twenty-one million, three hundred thousand, fifty".