12222120212 has 12 divisors (see below), whose sum is σ = 21389581920. Its totient is φ = 6110811096.

The previous prime is 12222120149. The next prime is 12222120223. The reversal of 12222120212 is 21202122221.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89033 + ... + 179919.

It is an arithmetic number, because the mean of its divisors is an integer number (1782465160).

Almost surely, 2^12222120212 is an apocalyptic number.

It is an amenable number.

12222120212 is a deficient number, since it is larger than the sum of its proper divisors (9167461708).

12222120212 is a wasteful number, since it uses less digits than its factorization.

12222120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124510 (or 124508 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 12222120212 its reverse (21202122221), we get a palindrome (33424242433).

The spelling of 12222120212 in words is "twelve billion, two hundred twenty-two million, one hundred twenty thousand, two hundred twelve".