999110221204 has 6 divisors (see below), whose sum is σ = 1748442887114. Its totient is φ = 499555110600.

The previous prime is 999110221201. The next prime is 999110221259. The reversal of 999110221204 is 402122011999.

It can be written as a sum of positive squares in only one way, i.e., 948777298704 + 50332922500 = 974052^2 + 224350^2 .

It is a super-2 number, since 2×999110221204² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999110221201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124888777647 + ... + 124888777654.

Almost surely, 2^999110221204 is an apocalyptic number.

It is an amenable number.

999110221204 is a deficient number, since it is larger than the sum of its proper divisors (749332665910).

999110221204 is a wasteful number, since it uses less digits than its factorization.

999110221204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249777555305 (or 249777555303 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 40.

The spelling of 999110221204 in words is "nine hundred ninety-nine billion, one hundred ten million, two hundred twenty-one thousand, two hundred four".