10123231209999 has 4 divisors (see below), whose sum is σ = 13497641613336. Its totient is φ = 6748820806664.

The previous prime is 10123231209997. The next prime is 10123231210031. The reversal of 10123231209999 is 99990213232101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10123231209999 - 2¹ = 10123231209997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10123231209997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1687205201664 + ... + 1687205201669.

It is an arithmetic number, because the mean of its divisors is an integer number (3374410403334).

Almost surely, 2^{10123231209999} is an apocalyptic number.

10123231209999 is a deficient number, since it is larger than the sum of its proper divisors (3374410403337).

10123231209999 is an equidigital number, since it uses as much as digits as its factorization.

10123231209999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3374410403336.

The product of its (nonzero) digits is 472392, while the sum is 51.

The spelling of 10123231209999 in words is "ten trillion, one hundred twenty-three billion, two hundred thirty-one million, two hundred nine thousand, nine hundred ninety-nine".