22220212221212 has 24 divisors (see below), whose sum is σ = 41353948965840. Its totient is φ = 10416854776320.

The previous prime is 22220212221157. The next prime is 22220212221223. The reversal of 22220212221212 is 21212221202222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1507060739 + ... + 1507075482.

It is an arithmetic number, because the mean of its divisors is an integer number (1723081206910).

Almost surely, 2^{22220212221212} is an apocalyptic number.

It is an amenable number.

22220212221212 is a deficient number, since it is larger than the sum of its proper divisors (19133736744628).

22220212221212 is a wasteful number, since it uses less digits than its factorization.

22220212221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3014136341 (or 3014136339 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 22220212221212 its reverse (21212221202222), we get a palindrome (43432433423434).

The spelling of 22220212221212 in words is "twenty-two trillion, two hundred twenty billion, two hundred twelve million, two hundred twenty-one thousand, two hundred twelve".