21353120714 has 4 divisors (see below), whose sum is σ = 32029681074. Its totient is φ = 10676560356.

The previous prime is 21353120713. The next prime is 21353120717. The reversal of 21353120714 is 41702135312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 13936983025 + 7416137689 = 118055^2 + 86117^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21353120713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5338280177 + ... + 5338280180.

Almost surely, 2^21353120714 is an apocalyptic number.

21353120714 is a deficient number, since it is larger than the sum of its proper divisors (10676560360).

21353120714 is a wasteful number, since it uses less digits than its factorization.

21353120714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10676560359.

The product of its (nonzero) digits is 5040, while the sum is 29.

The spelling of 21353120714 in words is "twenty-one billion, three hundred fifty-three million, one hundred twenty thousand, seven hundred fourteen".