11102131321 has 2 divisors, whose sum is σ = 11102131322. Its totient is φ = 11102131320.

The previous prime is 11102131279. The next prime is 11102131457. The reversal of 11102131321 is 12313120111.

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., 8243732025 + 2858399296 = 90795^2 + 53464^2 .

It is a cyclic number.

It is not a de Polignac number, because 11102131321 - 2⁷ = 11102131193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11102131295 and 11102131304.

It is not a weakly prime, because it can be changed into another prime (11102135321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5551065660 + 5551065661.

It is an arithmetic number, because the mean of its divisors is an integer number (5551065661).

Almost surely, 2^11102131321 is an apocalyptic number.

It is an amenable number.

11102131321 is a deficient number, since it is larger than the sum of its proper divisors (1).

11102131321 is an equidigital number, since it uses as much as digits as its factorization.

11102131321 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 11102131321 its reverse (12313120111), we get a palindrome (23415251432).

The spelling of 11102131321 in words is "eleven billion, one hundred two million, one hundred thirty-one thousand, three hundred twenty-one".