111212112022031 has 2 divisors, whose sum is σ = 111212112022032. Its totient is φ = 111212112022030.

The previous prime is 111212112022003. The next prime is 111212112022169. The reversal of 111212112022031 is 130220211212111.

It is a weak prime.

It is an emirp because it is prime and its reverse (130220211212111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111212112022031 - 2¹⁰ = 111212112021007 is a prime.

It is a super-2 number, since 2×111212112022031² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 111212112021994 and 111212112022012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111212112012031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55606056011015 + 55606056011016.

It is an arithmetic number, because the mean of its divisors is an integer number (55606056011016).

Almost surely, 2^{111212112022031} is an apocalyptic number.

111212112022031 is a deficient number, since it is larger than the sum of its proper divisors (1).

111212112022031 is an equidigital number, since it uses as much as digits as its factorization.

111212112022031 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 111212112022031 its reverse (130220211212111), we get a palindrome (241432323234142).

The spelling of 111212112022031 in words is "one hundred eleven trillion, two hundred twelve billion, one hundred twelve million, twenty-two thousand, thirty-one".