112100021202173 has 2 divisors, whose sum is σ = 112100021202174. Its totient is φ = 112100021202172.

The previous prime is 112100021202151. The next prime is 112100021202193. The reversal of 112100021202173 is 371202120001211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82265299080484 + 29834722121689 = 9070022^2 + 5462117^2 .

It is an emirp because it is prime and its reverse (371202120001211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112100021202173 is a prime.

It is a super-2 number, since 2×112100021202173² (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 (112100021202193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56050010601086 + 56050010601087.

It is an arithmetic number, because the mean of its divisors is an integer number (56050010601087).

Almost surely, 2^{112100021202173} is an apocalyptic number.

It is an amenable number.

112100021202173 is a deficient number, since it is larger than the sum of its proper divisors (1).

112100021202173 is an equidigital number, since it uses as much as digits as its factorization.

112100021202173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 23.

Adding to 112100021202173 its reverse (371202120001211), we get a palindrome (483302141203384).

The spelling of 112100021202173 in words is "one hundred twelve trillion, one hundred billion, twenty-one million, two hundred two thousand, one hundred seventy-three".