11358863221 has 2 divisors, whose sum is σ = 11358863222. Its totient is φ = 11358863220.

The previous prime is 11358863213. The next prime is 11358863261. The reversal of 11358863221 is 12236885311.

It is an a-pointer prime, because the next prime (11358863261) can be obtained adding 11358863221 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10540102225 + 818760996 = 102665^2 + 28614^2 .

It is a cyclic number.

It is not a de Polignac number, because 11358863221 - 2³ = 11358863213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11358863261) 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 as a sum of consecutive naturals, namely, 5679431610 + 5679431611.

It is an arithmetic number, because the mean of its divisors is an integer number (5679431611).

Almost surely, 2^11358863221 is an apocalyptic number.

It is an amenable number.

11358863221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11358863221 is an equidigital number, since it uses as much as digits as its factorization.

11358863221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 40.

The spelling of 11358863221 in words is "eleven billion, three hundred fifty-eight million, eight hundred sixty-three thousand, two hundred twenty-one".