121204997 has 2 divisors, whose sum is σ = 121204998. Its totient is φ = 121204996.

The previous prime is 121204973. The next prime is 121205027. The reversal of 121204997 is 799402121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73856836 + 47348161 = 8594^2 + 6881^2 .

It is a cyclic number.

It is not a de Polignac number, because 121204997 - 2²² = 117010693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121204907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60602498 + 60602499.

It is an arithmetic number, because the mean of its divisors is an integer number (60602499).

Almost surely, 2^121204997 is an apocalyptic number.

It is an amenable number.

121204997 is a deficient number, since it is larger than the sum of its proper divisors (1).

121204997 is an equidigital number, since it uses as much as digits as its factorization.

121204997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 121204997 is about 11009.3141021591. The cubic root of 121204997 is about 494.8879071424.

The spelling of 121204997 in words is "one hundred twenty-one million, two hundred four thousand, nine hundred ninety-seven".