12122220221212 has 12 divisors (see below), whose sum is σ = 21214077415776. Its totient is φ = 6061055245280.

The previous prime is 12122220221203. The next prime is 12122220221227. The reversal of 12122220221212 is 21212202222121.

It is a super-2 number, since 2×12122220221212² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 13217188 + ... + 14104555.

It is an arithmetic number, because the mean of its divisors is an integer number (1767839784648).

Almost surely, 2^{12122220221212} is an apocalyptic number.

It is an amenable number.

12122220221212 is a deficient number, since it is larger than the sum of its proper divisors (9091857194564).

12122220221212 is a wasteful number, since it uses less digits than its factorization.

12122220221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27432668 (or 27432666 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 12122220221212 its reverse (21212202222121), we get a palindrome (33334422443333).

The spelling of 12122220221212 in words is "twelve trillion, one hundred twenty-two billion, two hundred twenty million, two hundred twenty-one thousand, two hundred twelve".