22000321212 has 24 divisors (see below), whose sum is σ = 52721491536. Its totient is φ = 7135239168.

The previous prime is 22000321177. The next prime is 22000321237. The reversal of 22000321212 is 21212300022.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22000321191 and 22000321200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24774693 + ... + 24775580.

It is an arithmetic number, because the mean of its divisors is an integer number (2196728814).

Almost surely, 2^22000321212 is an apocalyptic number.

It is an amenable number.

22000321212 is an abundant number, since it is smaller than the sum of its proper divisors (30721170324).

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

22000321212 is a wasteful number, since it uses less digits than its factorization.

22000321212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49550317 (or 49550315 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 22000321212 its reverse (21212300022), we get a palindrome (43212621234).

The spelling of 22000321212 in words is "twenty-two billion, three hundred twenty-one thousand, two hundred twelve".