299999021121 has 24 divisors (see below), whose sum is σ = 436625280000. Its totient is φ = 198480496032.

The previous prime is 299999021093. The next prime is 299999021137. The reversal of 299999021121 is 121120999992.

It is not a de Polignac number, because 299999021121 - 2¹⁸ = 299998758977 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (299999021141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3141760 + ... + 3235838.

It is an arithmetic number, because the mean of its divisors is an integer number (18192720000).

Almost surely, 2^299999021121 is an apocalyptic number.

It is an amenable number.

299999021121 is a deficient number, since it is larger than the sum of its proper divisors (136626258879).

299999021121 is a wasteful number, since it uses less digits than its factorization.

299999021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96773 (or 96770 counting only the distinct ones).

The product of its (nonzero) digits is 472392, while the sum is 54.

The spelling of 299999021121 in words is "two hundred ninety-nine billion, nine hundred ninety-nine million, twenty-one thousand, one hundred twenty-one".