111112012201973 has 2 divisors, whose sum is σ = 111112012201974. Its totient is φ = 111112012201972.

The previous prime is 111112012201943. The next prime is 111112012201997. The reversal of 111112012201973 is 379102210211111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65765498625649 + 45346513576324 = 8109593^2 + 6733982^2 .

It is an emirp because it is prime and its reverse (379102210211111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111112012201973 - 2¹⁴ = 111112012185589 is a prime.

It is a super-3 number, since 3×111112012201973³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111112012201943) 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, 55556006100986 + 55556006100987.

It is an arithmetic number, because the mean of its divisors is an integer number (55556006100987).

Almost surely, 2^{111112012201973} is an apocalyptic number.

It is an amenable number.

111112012201973 is a deficient number, since it is larger than the sum of its proper divisors (1).

111112012201973 is an equidigital number, since it uses as much as digits as its factorization.

111112012201973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 32.

The spelling of 111112012201973 in words is "one hundred eleven trillion, one hundred twelve billion, twelve million, two hundred one thousand, nine hundred seventy-three".