122100397 has 2 divisors, whose sum is σ = 122100398. Its totient is φ = 122100396.

The previous prime is 122100389. The next prime is 122100427. The reversal of 122100397 is 793001221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95824521 + 26275876 = 9789^2 + 5126^2 .

It is a cyclic number.

It is not a de Polignac number, because 122100397 - 2³ = 122100389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122100317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61050198 + 61050199.

It is an arithmetic number, because the mean of its divisors is an integer number (61050199).

Almost surely, 2^122100397 is an apocalyptic number.

It is an amenable number.

122100397 is a deficient number, since it is larger than the sum of its proper divisors (1).

122100397 is an equidigital number, since it uses as much as digits as its factorization.

122100397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 122100397 is about 11049.9048412192. The cubic root of 122100397 is about 496.1035773218.

The spelling of 122100397 in words is "one hundred twenty-two million, one hundred thousand, three hundred ninety-seven".