22000011212 has 12 divisors (see below), whose sum is σ = 38501232336. Its totient is φ = 10999659120.

The previous prime is 22000011157. The next prime is 22000011239. The reversal of 22000011212 is 21211000022.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22000011193 and 22000011202.

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, 101762 + ... + 233142.

It is an arithmetic number, because the mean of its divisors is an integer number (3208436028).

Almost surely, 2^22000011212 is an apocalyptic number.

It is an amenable number.

22000011212 is a deficient number, since it is larger than the sum of its proper divisors (16501221124).

22000011212 is a wasteful number, since it uses less digits than its factorization.

22000011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173248 (or 173246 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 22000011212 its reverse (21211000022), we get a palindrome (43211011234).

The spelling of 22000011212 in words is "twenty-two billion, eleven thousand, two hundred twelve".