121101997 has 2 divisors, whose sum is σ = 121101998. Its totient is φ = 121101996.

The previous prime is 121101989. The next prime is 121102001. The reversal of 121101997 is 799101121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88623396 + 32478601 = 9414^2 + 5699^2 .

It is a cyclic number.

It is not a de Polignac number, because 121101997 - 2³ = 121101989 is a prime.

It is equal to p_6900844 and since 121101997 and 6900844 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121105997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60550998 + 60550999.

It is an arithmetic number, because the mean of its divisors is an integer number (60550999).

Almost surely, 2^121101997 is an apocalyptic number.

It is an amenable number.

121101997 is a deficient number, since it is larger than the sum of its proper divisors (1).

121101997 is an equidigital number, since it uses as much as digits as its factorization.

121101997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 31.

The square root of 121101997 is about 11004.6352506569. The cubic root of 121101997 is about 494.7476821747.

The spelling of 121101997 in words is "one hundred twenty-one million, one hundred one thousand, nine hundred ninety-seven".