203112310122089 has 2 divisors, whose sum is σ = 203112310122090. Its totient is φ = 203112310122088.

The previous prime is 203112310121989. The next prime is 203112310122091. The reversal of 203112310122089 is 980221013211302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 174586883675689 + 28525426446400 = 13213133^2 + 5340920^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203112310122089 is a prime.

It is a super-2 number, since 2×203112310122089² (a number of 29 digits) contains 22 as substring.

Together with 203112310122091, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (203112310142089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101556155061044 + 101556155061045.

It is an arithmetic number, because the mean of its divisors is an integer number (101556155061045).

Almost surely, 2^{203112310122089} is an apocalyptic number.

It is an amenable number.

203112310122089 is a deficient number, since it is larger than the sum of its proper divisors (1).

203112310122089 is an equidigital number, since it uses as much as digits as its factorization.

203112310122089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 35.

The spelling of 203112310122089 in words is "two hundred three trillion, one hundred twelve billion, three hundred ten million, one hundred twenty-two thousand, eighty-nine".