21314111221321 has 8 divisors (see below), whose sum is σ = 23092716946464. Its totient is φ = 19593820438080.

The previous prime is 21314111221241. The next prime is 21314111221327. The reversal of 21314111221321 is 12312211141312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21314111221321 - 2¹¹ = 21314111219273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21314111221327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14578734715 + ... + 14578736176.

It is an arithmetic number, because the mean of its divisors is an integer number (2886589618308).

Almost surely, 2^{21314111221321} is an apocalyptic number.

It is an amenable number.

21314111221321 is a deficient number, since it is larger than the sum of its proper divisors (1778605725143).

21314111221321 is a wasteful number, since it uses less digits than its factorization.

21314111221321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29157470951.

The product of its digits is 576, while the sum is 25.

Adding to 21314111221321 its reverse (12312211141312), we get a palindrome (33626322362633).

The spelling of 21314111221321 in words is "twenty-one trillion, three hundred fourteen billion, one hundred eleven million, two hundred twenty-one thousand, three hundred twenty-one".