21314411051 has 4 divisors (see below), whose sum is σ = 21344474400. Its totient is φ = 21284347704.

The previous prime is 21314411017. The next prime is 21314411081. The reversal of 21314411051 is 15011441312.

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 21314411051 - 2¹⁰ = 21314410027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21314411081) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 15030611 + ... + 15032028.

It is an arithmetic number, because the mean of its divisors is an integer number (5336118600).

Almost surely, 2^21314411051 is an apocalyptic number.

21314411051 is a deficient number, since it is larger than the sum of its proper divisors (30063349).

21314411051 is an equidigital number, since it uses as much as digits as its factorization.

21314411051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30063348.

The product of its (nonzero) digits is 480, while the sum is 23.

Adding to 21314411051 its reverse (15011441312), we get a palindrome (36325852363).

The spelling of 21314411051 in words is "twenty-one billion, three hundred fourteen million, four hundred eleven thousand, fifty-one".