123201029197 has 2 divisors, whose sum is σ = 123201029198. Its totient is φ = 123201029196.

The previous prime is 123201029143. The next prime is 123201029227. The reversal of 123201029197 is 791920102321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118800166276 + 4400862921 = 344674^2 + 66339^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123201029197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123201089197) 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, 61600514598 + 61600514599.

It is an arithmetic number, because the mean of its divisors is an integer number (61600514599).

Almost surely, 2^123201029197 is an apocalyptic number.

It is an amenable number.

123201029197 is a deficient number, since it is larger than the sum of its proper divisors (1).

123201029197 is an equidigital number, since it uses as much as digits as its factorization.

123201029197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 37.

The spelling of 123201029197 in words is "one hundred twenty-three billion, two hundred one million, twenty-nine thousand, one hundred ninety-seven".