21021709314 has 16 divisors (see below), whose sum is σ = 42088300128. Its totient is φ = 6999756192.

The previous prime is 21021709217. The next prime is 21021709321. The reversal of 21021709314 is 41390712012.

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 7 ways as a sum of consecutive naturals, for example, 1863972 + ... + 1875215.

It is an arithmetic number, because the mean of its divisors is an integer number (2630518758).

Almost surely, 2^21021709314 is an apocalyptic number.

21021709314 is an abundant number, since it is smaller than the sum of its proper divisors (21066590814).

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

21021709314 is a wasteful number, since it uses less digits than its factorization.

21021709314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3740129.

The product of its (nonzero) digits is 3024, while the sum is 30.

The spelling of 21021709314 in words is "twenty-one billion, twenty-one million, seven hundred nine thousand, three hundred fourteen".