22020221212 has 24 divisors (see below), whose sum is σ = 42071026032. Its totient is φ = 10001472000.

The previous prime is 22020221189. The next prime is 22020221221. The reversal of 22020221212 is 21212202022.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135093 + ... + 249580.

It is an arithmetic number, because the mean of its divisors is an integer number (1752959418).

Almost surely, 2^22020221212 is an apocalyptic number.

22020221212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22020221212 is a deficient number, since it is larger than the sum of its proper divisors (20050804820).

22020221212 is a wasteful number, since it uses less digits than its factorization.

22020221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385989 (or 385987 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 22020221212 its reverse (21212202022), we get a palindrome (43232423234).

The spelling of 22020221212 in words is "twenty-two billion, twenty million, two hundred twenty-one thousand, two hundred twelve".