10123219999 has 2 divisors, whose sum is σ = 10123220000. Its totient is φ = 10123219998.

The previous prime is 10123219961. The next prime is 10123220011. The reversal of 10123219999 is 99991232101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10123219999 - 2¹⁵ = 10123187231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10123219919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5061609999 + 5061610000.

It is an arithmetic number, because the mean of its divisors is an integer number (5061610000).

Almost surely, 2^10123219999 is an apocalyptic number.

10123219999 is a deficient number, since it is larger than the sum of its proper divisors (1).

10123219999 is an equidigital number, since it uses as much as digits as its factorization.

10123219999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78732, while the sum is 46.

The spelling of 10123219999 in words is "ten billion, one hundred twenty-three million, two hundred nineteen thousand, nine hundred ninety-nine".