11388485321 has 2 divisors, whose sum is σ = 11388485322. Its totient is φ = 11388485320.

The previous prime is 11388485309. The next prime is 11388485323. The reversal of 11388485321 is 12358488311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8507479696 + 2881005625 = 92236^2 + 53675^2 .

It is a cyclic number.

It is not a de Polignac number, because 11388485321 - 2³⁰ = 10314743497 is a prime.

Together with 11388485323, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11388485323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5694242660 + 5694242661.

It is an arithmetic number, because the mean of its divisors is an integer number (5694242661).

Almost surely, 2^11388485321 is an apocalyptic number.

It is an amenable number.

11388485321 is a deficient number, since it is larger than the sum of its proper divisors (1).

11388485321 is an equidigital number, since it uses as much as digits as its factorization.

11388485321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 184320, while the sum is 44.

The spelling of 11388485321 in words is "eleven billion, three hundred eighty-eight million, four hundred eighty-five thousand, three hundred twenty-one".