11321255155 has 16 divisors (see below), whose sum is σ = 16201350144. Its totient is φ = 7425617760.

The previous prime is 11321255147. The next prime is 11321255207. The reversal of 11321255155 is 55155212311.

11321255155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11321255155 - 2³ = 11321255147 is a prime.

It is a super-2 number, since 2×11321255155² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 7031031 + ... + 7032640.

It is an arithmetic number, because the mean of its divisors is an integer number (1012584384).

Almost surely, 2^11321255155 is an apocalyptic number.

11321255155 is a deficient number, since it is larger than the sum of its proper divisors (4880094989).

11321255155 is a wasteful number, since it uses less digits than its factorization.

11321255155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14063706.

The product of its digits is 7500, while the sum is 31.

Adding to 11321255155 its reverse (55155212311), we get a palindrome (66476467466).

The spelling of 11321255155 in words is "eleven billion, three hundred twenty-one million, two hundred fifty-five thousand, one hundred fifty-five".