121040252197 has 2 divisors, whose sum is σ = 121040252198. Its totient is φ = 121040252196.

The previous prime is 121040252183. The next prime is 121040252237. The reversal of 121040252197 is 791252040121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119974947876 + 1065304321 = 346374^2 + 32639^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121040252197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121040252797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60520126098 + 60520126099.

It is an arithmetic number, because the mean of its divisors is an integer number (60520126099).

Almost surely, 2^121040252197 is an apocalyptic number.

It is an amenable number.

121040252197 is a deficient number, since it is larger than the sum of its proper divisors (1).

121040252197 is an equidigital number, since it uses as much as digits as its factorization.

121040252197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 34.

The spelling of 121040252197 in words is "one hundred twenty-one billion, forty million, two hundred fifty-two thousand, one hundred ninety-seven".