999999999999922 has 8 divisors (see below), whose sum is σ = 1500000374355372. Its totient is φ = 499999875214800.

The previous prime is 999999999999883. The next prime is 999999999999947. The reversal of 999999999999922 is 229999999999999.

It can be written as a sum of positive squares in 2 ways, for example, as 988935255970281 + 11064744029641 = 31447341^2 + 3326371^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-9 number, since 9×999999999999922⁹ (a number of 136 digits) contains 999999999 as substring.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 999999999999794 and 999999999999803.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52031229 + ... + 68609392.

Almost surely, 2^{999999999999922} is an apocalyptic number.

999999999999922 is a deficient number, since it is larger than the sum of its proper divisors (500000374355450).

999999999999922 is a wasteful number, since it uses less digits than its factorization.

999999999999922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124785164.

The product of its digits is 10167463313316, while the sum is 121.

The spelling of 999999999999922 in words is "nine hundred ninety-nine trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred twenty-two".