11400354221 has 2 divisors, whose sum is σ = 11400354222. Its totient is φ = 11400354220.

The previous prime is 11400354167. The next prime is 11400354239. The reversal of 11400354221 is 12245300411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11395562500 + 4791721 = 106750^2 + 2189^2 .

It is a cyclic number.

It is not a de Polignac number, because 11400354221 - 2¹⁰ = 11400353197 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11400354281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5700177110 + 5700177111.

It is an arithmetic number, because the mean of its divisors is an integer number (5700177111).

Almost surely, 2^11400354221 is an apocalyptic number.

It is an amenable number.

11400354221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11400354221 is an equidigital number, since it uses as much as digits as its factorization.

11400354221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 11400354221 its reverse (12245300411), we get a palindrome (23645654632).

The spelling of 11400354221 in words is "eleven billion, four hundred million, three hundred fifty-four thousand, two hundred twenty-one".