111212000102173 has 2 divisors, whose sum is σ = 111212000102174. Its totient is φ = 111212000102172.

The previous prime is 111212000102131. The next prime is 111212000102213. The reversal of 111212000102173 is 371201000212111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83313775459044 + 27898224643129 = 9127638^2 + 5281877^2 .

It is a cyclic number.

It is not a de Polignac number, because 111212000102173 - 2¹⁷ = 111211999971101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111212000102123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55606000051086 + 55606000051087.

It is an arithmetic number, because the mean of its divisors is an integer number (55606000051087).

Almost surely, 2^{111212000102173} is an apocalyptic number.

It is an amenable number.

111212000102173 is a deficient number, since it is larger than the sum of its proper divisors (1).

111212000102173 is an equidigital number, since it uses as much as digits as its factorization.

111212000102173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 22.

Adding to 111212000102173 its reverse (371201000212111), we get a palindrome (482413000314284).

The spelling of 111212000102173 in words is "one hundred eleven trillion, two hundred twelve billion, one hundred two thousand, one hundred seventy-three".