111212222011013 has 2 divisors, whose sum is σ = 111212222011014. Its totient is φ = 111212222011012.

The previous prime is 111212222010983. The next prime is 111212222011097. The reversal of 111212222011013 is 310110222212111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81212863665124 + 29999358345889 = 9011818^2 + 5477167^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111212222011013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111212212011013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55606111005506 + 55606111005507.

It is an arithmetic number, because the mean of its divisors is an integer number (55606111005507).

Almost surely, 2^{111212222011013} is an apocalyptic number.

It is an amenable number.

111212222011013 is a deficient number, since it is larger than the sum of its proper divisors (1).

111212222011013 is an equidigital number, since it uses as much as digits as its factorization.

111212222011013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 111212222011013 its reverse (310110222212111), we get a palindrome (421322444223124).

The spelling of 111212222011013 in words is "one hundred eleven trillion, two hundred twelve billion, two hundred twenty-two million, eleven thousand, thirteen".