121298349797 has 2 divisors, whose sum is σ = 121298349798. Its totient is φ = 121298349796.

The previous prime is 121298349727. The next prime is 121298349811. The reversal of 121298349797 is 797943892121.

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., 100312191841 + 20986157956 = 316721^2 + 144866^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121298349797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121298349727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60649174898 + 60649174899.

It is an arithmetic number, because the mean of its divisors is an integer number (60649174899).

Almost surely, 2^121298349797 is an apocalyptic number.

It is an amenable number.

121298349797 is a deficient number, since it is larger than the sum of its proper divisors (1).

121298349797 is an equidigital number, since it uses as much as digits as its factorization.

121298349797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13716864, while the sum is 62.

The spelling of 121298349797 in words is "one hundred twenty-one billion, two hundred ninety-eight million, three hundred forty-nine thousand, seven hundred ninety-seven".