111312100021027 has 2 divisors, whose sum is σ = 111312100021028. Its totient is φ = 111312100021026.

The previous prime is 111312100020983. The next prime is 111312100021123. The reversal of 111312100021027 is 720120001213111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111312100021027 - 2⁷ = 111312100020899 is a prime.

It is a super-2 number, since 2×111312100021027² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111312100020989 and 111312100021007.

It is not a weakly prime, because it can be changed into another prime (111312100027027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55656050010513 + 55656050010514.

It is an arithmetic number, because the mean of its divisors is an integer number (55656050010514).

Almost surely, 2^{111312100021027} is an apocalyptic number.

111312100021027 is a deficient number, since it is larger than the sum of its proper divisors (1).

111312100021027 is an equidigital number, since it uses as much as digits as its factorization.

111312100021027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 22.

Adding to 111312100021027 its reverse (720120001213111), we get a palindrome (831432101234138).

The spelling of 111312100021027 in words is "one hundred eleven trillion, three hundred twelve billion, one hundred million, twenty-one thousand, twenty-seven".