22000012012 has 12 divisors (see below), whose sum is σ = 42000023016. Its totient is φ = 10000005440.

The previous prime is 22000011977. The next prime is 22000012031. The reversal of 22000012012 is 21021000022.

It is a self number, because there is not a number n which added to its sum of digits gives 22000012012.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 250000093 + ... + 250000180.

It is an arithmetic number, because the mean of its divisors is an integer number (3500001918).

Almost surely, 2^22000012012 is an apocalyptic number.

22000012012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22000012012 is a deficient number, since it is larger than the sum of its proper divisors (20000011004).

22000012012 is a wasteful number, since it uses less digits than its factorization.

22000012012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500000288 (or 500000286 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 22000012012 its reverse (21021000022), we get a palindrome (43021012034).

The spelling of 22000012012 in words is "twenty-two billion, twelve thousand, twelve".