121503197 has 2 divisors, whose sum is σ = 121503198. Its totient is φ = 121503196.

The previous prime is 121503169. The next prime is 121503211. The reversal of 121503197 is 791305121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76492516 + 45010681 = 8746^2 + 6709^2 .

It is a cyclic number.

It is not a de Polignac number, because 121503197 - 2⁶ = 121503133 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121503397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60751598 + 60751599.

It is an arithmetic number, because the mean of its divisors is an integer number (60751599).

Almost surely, 2^121503197 is an apocalyptic number.

It is an amenable number.

121503197 is a deficient number, since it is larger than the sum of its proper divisors (1).

121503197 is an equidigital number, since it uses as much as digits as its factorization.

121503197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1890, while the sum is 29.

The square root of 121503197 is about 11022.8488604353. The cubic root of 121503197 is about 495.2934314366.

The spelling of 121503197 in words is "one hundred twenty-one million, five hundred three thousand, one hundred ninety-seven".