21214065300 has 72 divisors (see below), whose sum is σ = 61454837472. Its totient is φ = 5650128000.

The previous prime is 21214065289. The next prime is 21214065331. The reversal of 21214065300 is 356041212.

It is a congruent number.

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, 203235 + ... + 289365.

Almost surely, 2^21214065300 is an apocalyptic number.

21214065300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21214065300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30727418736).

21214065300 is an abundant number, since it is smaller than the sum of its proper divisors (40240772172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21214065300 is a wasteful number, since it uses less digits than its factorization.

21214065300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86969 (or 86962 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The spelling of 21214065300 in words is "twenty-one billion, two hundred fourteen million, sixty-five thousand, three hundred".