123212119897 has 2 divisors, whose sum is σ = 123212119898. Its totient is φ = 123212119896.

The previous prime is 123212119883. The next prime is 123212119951. The reversal of 123212119897 is 798911212321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117175451481 + 6036668416 = 342309^2 + 77696^2 .

It is a cyclic number.

It is not a de Polignac number, because 123212119897 - 2¹¹ = 123212117849 is a prime.

It is not a weakly prime, because it can be changed into another prime (123212119867) 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, 61606059948 + 61606059949.

It is an arithmetic number, because the mean of its divisors is an integer number (61606059949).

Almost surely, 2^123212119897 is an apocalyptic number.

It is an amenable number.

123212119897 is a deficient number, since it is larger than the sum of its proper divisors (1).

123212119897 is an equidigital number, since it uses as much as digits as its factorization.

123212119897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 46.

The spelling of 123212119897 in words is "one hundred twenty-three billion, two hundred twelve million, one hundred nineteen thousand, eight hundred ninety-seven".