111212110121113 has 2 divisors, whose sum is σ = 111212110121114. Its totient is φ = 111212110121112.

The previous prime is 111212110121083. The next prime is 111212110121143. The reversal of 111212110121113 is 311121011212111.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (111212110121083) and next prime (111212110121143).

It can be written as a sum of positive squares in only one way, i.e., 110641198406544 + 570911714569 = 10518612^2 + 755587^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111212110121113 is a prime.

It is not a weakly prime, because it can be changed into another prime (111212110121143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55606055060556 + 55606055060557.

It is an arithmetic number, because the mean of its divisors is an integer number (55606055060557).

Almost surely, 2^{111212110121113} is an apocalyptic number.

It is an amenable number.

111212110121113 is a deficient number, since it is larger than the sum of its proper divisors (1).

111212110121113 is an equidigital number, since it uses as much as digits as its factorization.

111212110121113 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 19.

Adding to 111212110121113 its reverse (311121011212111), we get a palindrome (422333121333224).

The spelling of 111212110121113 in words is "one hundred eleven trillion, two hundred twelve billion, one hundred ten million, one hundred twenty-one thousand, one hundred thirteen".