112012002311981 has 2 divisors, whose sum is σ = 112012002311982. Its totient is φ = 112012002311980.

The previous prime is 112012002311903. The next prime is 112012002312101. The reversal of 112012002311981 is 189113200210211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93638348709481 + 18373653602500 = 9676691^2 + 4286450^2 .

It is an emirp because it is prime and its reverse (189113200210211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112012002311981 is a prime.

It is a super-2 number, since 2×112012002311981² (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 (112012002317981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56006001155990 + 56006001155991.

It is an arithmetic number, because the mean of its divisors is an integer number (56006001155991).

Almost surely, 2^{112012002311981} is an apocalyptic number.

It is an amenable number.

112012002311981 is a deficient number, since it is larger than the sum of its proper divisors (1).

112012002311981 is an equidigital number, since it uses as much as digits as its factorization.

112012002311981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 32.

The spelling of 112012002311981 in words is "one hundred twelve trillion, twelve billion, two million, three hundred eleven thousand, nine hundred eighty-one".