112129217 has 2 divisors, whose sum is σ = 112129218. Its totient is φ = 112129216.

The previous prime is 112129211. The next prime is 112129223. The reversal of 112129217 is 712921211.

It is a balanced prime because it is at equal distance from previous prime (112129211) and next prime (112129223).

It can be written as a sum of positive squares in only one way, i.e., 105493441 + 6635776 = 10271^2 + 2576^2 .

It is a cyclic number.

It is not a de Polignac number, because 112129217 - 2¹⁶ = 112063681 is a prime.

It is a super-2 number, since 2×112129217² = 25145922610066178, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (112129211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56064608 + 56064609.

It is an arithmetic number, because the mean of its divisors is an integer number (56064609).

Almost surely, 2^112129217 is an apocalyptic number.

It is an amenable number.

112129217 is a deficient number, since it is larger than the sum of its proper divisors (1).

112129217 is an equidigital number, since it uses as much as digits as its factorization.

112129217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504, while the sum is 26.

The square root of 112129217 is about 10589.1084138373. The cubic root of 112129217 is about 482.2137573952.

The spelling of 112129217 in words is "one hundred twelve million, one hundred twenty-nine thousand, two hundred seventeen".