111100212100231 has 2 divisors, whose sum is σ = 111100212100232. Its totient is φ = 111100212100230.

The previous prime is 111100212100219. The next prime is 111100212100289. The reversal of 111100212100231 is 132001212001111.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (132001212001111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111100212100231 - 2⁷ = 111100212100103 is a prime.

It is a super-2 number, since 2×111100212100231² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111100212100931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55550106050115 + 55550106050116.

It is an arithmetic number, because the mean of its divisors is an integer number (55550106050116).

Almost surely, 2^{111100212100231} is an apocalyptic number.

111100212100231 is a deficient number, since it is larger than the sum of its proper divisors (1).

111100212100231 is an equidigital number, since it uses as much as digits as its factorization.

111100212100231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 111100212100231 its reverse (132001212001111), we get a palindrome (243101424101342).

The spelling of 111100212100231 in words is "one hundred eleven trillion, one hundred billion, two hundred twelve million, one hundred thousand, two hundred thirty-one".