11312101321 has 2 divisors, whose sum is σ = 11312101322. Its totient is φ = 11312101320.

The previous prime is 11312101319. The next prime is 11312101327. The reversal of 11312101321 is 12310121311.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10943461321 + 368640000 = 104611^2 + 19200^2 .

It is a cyclic number.

It is not a de Polignac number, because 11312101321 - 2¹ = 11312101319 is a prime.

Together with 11312101319, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 11312101295 and 11312101304.

It is not a weakly prime, because it can be changed into another prime (11312101327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5656050660 + 5656050661.

It is an arithmetic number, because the mean of its divisors is an integer number (5656050661).

Almost surely, 2^11312101321 is an apocalyptic number.

It is an amenable number.

11312101321 is a deficient number, since it is larger than the sum of its proper divisors (1).

11312101321 is an equidigital number, since it uses as much as digits as its factorization.

11312101321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 11312101321 its reverse (12310121311), we get a palindrome (23622222632).

The spelling of 11312101321 in words is "eleven billion, three hundred twelve million, one hundred one thousand, three hundred twenty-one".