111100131123131 has 2 divisors, whose sum is σ = 111100131123132. Its totient is φ = 111100131123130.

The previous prime is 111100131123071. The next prime is 111100131123217. The reversal of 111100131123131 is 131321131001111.

It is a weak prime.

It is an emirp because it is prime and its reverse (131321131001111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111100131123131 - 2⁶ = 111100131123067 is a prime.

It is a super-2 number, since 2×111100131123131² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111100131120131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55550065561565 + 55550065561566.

It is an arithmetic number, because the mean of its divisors is an integer number (55550065561566).

Almost surely, 2^{111100131123131} is an apocalyptic number.

111100131123131 is a deficient number, since it is larger than the sum of its proper divisors (1).

111100131123131 is an equidigital number, since it uses as much as digits as its factorization.

111100131123131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 20.

Adding to 111100131123131 its reverse (131321131001111), we get a palindrome (242421262124242).

The spelling of 111100131123131 in words is "one hundred eleven trillion, one hundred billion, one hundred thirty-one million, one hundred twenty-three thousand, one hundred thirty-one".