197005121 has 2 divisors, whose sum is σ = 197005122. Its totient is φ = 197005120.

The previous prime is 197005099. The next prime is 197005139. The reversal of 197005121 is 121500791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 183900721 + 13104400 = 13561^2 + 3620^2 .

It is a cyclic number.

It is not a de Polignac number, because 197005121 - 2¹⁰ = 197004097 is a prime.

It is a super-2 number, since 2×197005121² = 77622035400449282, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (197005181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98502560 + 98502561.

It is an arithmetic number, because the mean of its divisors is an integer number (98502561).

Almost surely, 2^197005121 is an apocalyptic number.

It is an amenable number.

197005121 is a deficient number, since it is larger than the sum of its proper divisors (1).

197005121 is an equidigital number, since it uses as much as digits as its factorization.

197005121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 630, while the sum is 26.

The square root of 197005121 is about 14035.8512745042. The cubic root of 197005121 is about 581.8698285496.

The spelling of 197005121 in words is "one hundred ninety-seven million, five thousand, one hundred twenty-one".