112128997 has 2 divisors, whose sum is σ = 112128998. Its totient is φ = 112128996.

The previous prime is 112128971. The next prime is 112129007. The reversal of 112128997 is 799821211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102697956 + 9431041 = 10134^2 + 3071^2 .

It is a cyclic number.

It is not a de Polignac number, because 112128997 - 2⁷ = 112128869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112128917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56064498 + 56064499.

It is an arithmetic number, because the mean of its divisors is an integer number (56064499).

Almost surely, 2^112128997 is an apocalyptic number.

It is an amenable number.

112128997 is a deficient number, since it is larger than the sum of its proper divisors (1).

112128997 is an equidigital number, since it uses as much as digits as its factorization.

112128997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 40.

The square root of 112128997 is about 10589.0980257999. The cubic root of 112128997 is about 482.2134420237.

The spelling of 112128997 in words is "one hundred twelve million, one hundred twenty-eight thousand, nine hundred ninety-seven".