21300250502 has 32 divisors (see below), whose sum is σ = 33050900064. Its totient is φ = 10287648000.

The previous prime is 21300250501. The next prime is 21300250553. The reversal of 21300250502 is 20505200312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21300250501) 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, 11826002 + ... + 11827802.

It is an arithmetic number, because the mean of its divisors is an integer number (1032840627).

Almost surely, 2^21300250502 is an apocalyptic number.

21300250502 is a deficient number, since it is larger than the sum of its proper divisors (11750649562).

21300250502 is a wasteful number, since it uses less digits than its factorization.

21300250502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2904.

The product of its (nonzero) digits is 600, while the sum is 20.

Adding to 21300250502 its reverse (20505200312), we get a palindrome (41805450814).

The spelling of 21300250502 in words is "twenty-one billion, three hundred million, two hundred fifty thousand, five hundred two".