21241045216319 has 4 divisors (see below), whose sum is σ = 21243017285880. Its totient is φ = 21239073146760.

The previous prime is 21241045216277. The next prime is 21241045216337. The reversal of 21241045216319 is 91361254014212.

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 21241045216319 - 2¹² = 21241045212223 is a prime.

It is a super-2 number, since 2×21241045216319² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21241045216619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 986018624 + ... + 986040165.

It is an arithmetic number, because the mean of its divisors is an integer number (5310754321470).

Almost surely, 2^{21241045216319} is an apocalyptic number.

21241045216319 is a deficient number, since it is larger than the sum of its proper divisors (1972069561).

21241045216319 is a wasteful number, since it uses less digits than its factorization.

21241045216319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1972069560.

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 21241045216319 in words is "twenty-one trillion, two hundred forty-one billion, forty-five million, two hundred sixteen thousand, three hundred nineteen".