121331797 has 2 divisors, whose sum is σ = 121331798. Its totient is φ = 121331796.

The previous prime is 121331761. The next prime is 121331801. The reversal of 121331797 is 797133121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120868036 + 463761 = 10994^2 + 681^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121331797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121331747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60665898 + 60665899.

It is an arithmetic number, because the mean of its divisors is an integer number (60665899).

Almost surely, 2^121331797 is an apocalyptic number.

It is an amenable number.

121331797 is a deficient number, since it is larger than the sum of its proper divisors (1).

121331797 is an equidigital number, since it uses as much as digits as its factorization.

121331797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7938, while the sum is 34.

The square root of 121331797 is about 11015.0713570090. The cubic root of 121331797 is about 495.0604245524.

The spelling of 121331797 in words is "one hundred twenty-one million, three hundred thirty-one thousand, seven hundred ninety-seven".