12122220222122 has 12 divisors (see below), whose sum is σ = 19190717056386. Its totient is φ = 5742104315400.

The previous prime is 12122220222121. The next prime is 12122220222131. The reversal of 12122220222122 is 22122202222121.

It can be written as a sum of positive squares in only one way, i.e., 10541067383401 + 1581152838721 = 3246701^2 + 1257439^2 .

It is a super-2 number, since 2×12122220222122² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12122220222121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8394888629 + ... + 8394890072.

Almost surely, 2^{12122220222122} is an apocalyptic number.

12122220222122 is a deficient number, since it is larger than the sum of its proper divisors (7068496834264).

12122220222122 is a wasteful number, since it uses less digits than its factorization.

12122220222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16789778741 (or 16789778722 counting only the distinct ones).

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

Adding to 12122220222122 its reverse (22122202222121), we get a palindrome (34244422444243).

The spelling of 12122220222122 in words is "twelve trillion, one hundred twenty-two billion, two hundred twenty million, two hundred twenty-two thousand, one hundred twenty-two".