999204123011 has 2 divisors, whose sum is σ = 999204123012. Its totient is φ = 999204123010.

The previous prime is 999204122957. The next prime is 999204123059. The reversal of 999204123011 is 110321402999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 999204123011 - 2¹⁴ = 999204106627 is a prime.

It is a super-2 number, since 2×999204123011² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 999204123011.

It is not a weakly prime, because it can be changed into another prime (999204183011) 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, 499602061505 + 499602061506.

It is an arithmetic number, because the mean of its divisors is an integer number (499602061506).

Almost surely, 2^999204123011 is an apocalyptic number.

999204123011 is a deficient number, since it is larger than the sum of its proper divisors (1).

999204123011 is an equidigital number, since it uses as much as digits as its factorization.

999204123011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 41.

The spelling of 999204123011 in words is "nine hundred ninety-nine billion, two hundred four million, one hundred twenty-three thousand, eleven".