123212299999 has 2 divisors, whose sum is σ = 123212300000. Its totient is φ = 123212299998.

The previous prime is 123212299897. The next prime is 123212300033. The reversal of 123212299999 is 999992212321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123212299999 - 2⁷ = 123212299871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123212299099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61606149999 + 61606150000.

It is an arithmetic number, because the mean of its divisors is an integer number (61606150000).

Almost surely, 2^123212299999 is an apocalyptic number.

123212299999 is a deficient number, since it is larger than the sum of its proper divisors (1).

123212299999 is an equidigital number, since it uses as much as digits as its factorization.

123212299999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2834352, while the sum is 58.

The spelling of 123212299999 in words is "one hundred twenty-three billion, two hundred twelve million, two hundred ninety-nine thousand, nine hundred ninety-nine".