11155150621 has 2 divisors, whose sum is σ = 11155150622. Its totient is φ = 11155150620.

The previous prime is 11155150597. The next prime is 11155150651. The reversal of 11155150621 is 12605155111.

11155150621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6333931396 + 4821219225 = 79586^2 + 69435^2 .

It is an emirp because it is prime and its reverse (12605155111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11155150621 - 2⁷ = 11155150493 is a prime.

It is a super-3 number, since 3×11155150621³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11155150621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11155150651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5577575310 + 5577575311.

It is an arithmetic number, because the mean of its divisors is an integer number (5577575311).

Almost surely, 2^11155150621 is an apocalyptic number.

It is an amenable number.

11155150621 is a deficient number, since it is larger than the sum of its proper divisors (1).

11155150621 is an equidigital number, since it uses as much as digits as its factorization.

11155150621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1500, while the sum is 28.

The spelling of 11155150621 in words is "eleven billion, one hundred fifty-five million, one hundred fifty thousand, six hundred twenty-one".