11231212223117 has 2 divisors, whose sum is σ = 11231212223118. Its totient is φ = 11231212223116.

The previous prime is 11231212223017. The next prime is 11231212223167. The reversal of 11231212223117 is 71132221213211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7500948753796 + 3730263469321 = 2738786^2 + 1931389^2 .

It is a cyclic number.

It is not a de Polignac number, because 11231212223117 - 2²⁴ = 11231195445901 is a prime.

It is a super-2 number, since 2×11231212223117² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11231212223117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11231212223167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5615606111558 + 5615606111559.

It is an arithmetic number, because the mean of its divisors is an integer number (5615606111559).

Almost surely, 2^{11231212223117} is an apocalyptic number.

It is an amenable number.

11231212223117 is a deficient number, since it is larger than the sum of its proper divisors (1).

11231212223117 is an equidigital number, since it uses as much as digits as its factorization.

11231212223117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 29.

Adding to 11231212223117 its reverse (71132221213211), we get a palindrome (82363433436328).

The spelling of 11231212223117 in words is "eleven trillion, two hundred thirty-one billion, two hundred twelve million, two hundred twenty-three thousand, one hundred seventeen".