22221102011212 has 24 divisors (see below), whose sum is σ = 41878360935936. Its totient is φ = 10255861344768.

The previous prime is 22221102011197. The next prime is 22221102011221. The reversal of 22221102011212 is 21211020112222.

It is a self number, because there is not a number n which added to its sum of digits gives 22221102011212.

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 7 ways as a sum of consecutive naturals, for example, 27982908 + ... + 28766044.

It is an arithmetic number, because the mean of its divisors is an integer number (1744931705664).

Almost surely, 2^{22221102011212} is an apocalyptic number.

It is an amenable number.

22221102011212 is a deficient number, since it is larger than the sum of its proper divisors (19657258924724).

22221102011212 is a wasteful number, since it uses less digits than its factorization.

22221102011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328817 (or 1328815 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22221102011212 its reverse (21211020112222), we get a palindrome (43432122123434).

The spelling of 22221102011212 in words is "twenty-two trillion, two hundred twenty-one billion, one hundred two million, eleven thousand, two hundred twelve".