21303641371 has 4 divisors (see below), whose sum is σ = 22229886672. Its totient is φ = 20377396072.

The previous prime is 21303641357. The next prime is 21303641383. The reversal of 21303641371 is 17314630312.

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

It is a cyclic number.

It is not a de Polignac number, because 21303641371 - 2¹⁵ = 21303608603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21303641771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 463122616 + ... + 463122661.

It is an arithmetic number, because the mean of its divisors is an integer number (5557471668).

Almost surely, 2^21303641371 is an apocalyptic number.

21303641371 is a deficient number, since it is larger than the sum of its proper divisors (926245301).

21303641371 is an equidigital number, since it uses as much as digits as its factorization.

21303641371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926245300.

The product of its (nonzero) digits is 9072, while the sum is 31.

The spelling of 21303641371 in words is "twenty-one billion, three hundred three million, six hundred forty-one thousand, three hundred seventy-one".