12122222220212 has 24 divisors (see below), whose sum is σ = 22900250940000. Its totient is φ = 5581518867936.

The previous prime is 12122222220193. The next prime is 12122222220221. The reversal of 12122222220212 is 21202222222121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278163962 + ... + 278207537.

It is an arithmetic number, because the mean of its divisors is an integer number (954177122500).

Almost surely, 2^{12122222220212} is an apocalyptic number.

It is an amenable number.

12122222220212 is a deficient number, since it is larger than the sum of its proper divisors (10778028719788).

12122222220212 is a wasteful number, since it uses less digits than its factorization.

12122222220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556371935 (or 556371933 counting only the distinct ones).

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

Adding to 12122222220212 its reverse (21202222222121), we get a palindrome (33324444442333).

The spelling of 12122222220212 in words is "twelve trillion, one hundred twenty-two billion, two hundred twenty-two million, two hundred twenty thousand, two hundred twelve".