999000012222 has 24 divisors (see below), whose sum is σ = 2164521977280. Its totient is φ = 332996627040.

The previous prime is 999000012221. The next prime is 999000012259. The reversal of 999000012222 is 222210000999.

It is a super-2 number, since 2×999000012222² (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 (999000012221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2076979 + ... + 2512337.

It is an arithmetic number, because the mean of its divisors is an integer number (90188415720).

Almost surely, 2^999000012222 is an apocalyptic number.

999000012222 is an abundant number, since it is smaller than the sum of its proper divisors (1165521965058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

999000012222 is a wasteful number, since it uses less digits than its factorization.

999000012222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562848 (or 562845 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The spelling of 999000012222 in words is "nine hundred ninety-nine billion, twelve thousand, two hundred twenty-two".