202112917 has 2 divisors, whose sum is σ = 202112918. Its totient is φ = 202112916.

The previous prime is 202112909. The next prime is 202112921. The reversal of 202112917 is 719211202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166900561 + 35212356 = 12919^2 + 5934^2 .

It is a cyclic number.

It is not a de Polignac number, because 202112917 - 2³ = 202112909 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202112891 and 202112900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202112117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101056458 + 101056459.

It is an arithmetic number, because the mean of its divisors is an integer number (101056459).

Almost surely, 2^202112917 is an apocalyptic number.

It is an amenable number.

202112917 is a deficient number, since it is larger than the sum of its proper divisors (1).

202112917 is an equidigital number, since it uses as much as digits as its factorization.

202112917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 202112917 is about 14216.6422547661. The cubic root of 202112917 is about 586.8557399291.

The spelling of 202112917 in words is "two hundred two million, one hundred twelve thousand, nine hundred seventeen".