12011222212 has 12 divisors (see below), whose sum is σ = 22930515216. Its totient is φ = 5459646440.

The previous prime is 12011222137. The next prime is 12011222221. The reversal of 12011222212 is 21222211021.

It is a happy 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, 136491118 + ... + 136491205.

It is an arithmetic number, because the mean of its divisors is an integer number (1910876268).

Almost surely, 2^12011222212 is an apocalyptic number.

It is an amenable number.

12011222212 is a deficient number, since it is larger than the sum of its proper divisors (10919293004).

12011222212 is a wasteful number, since it uses less digits than its factorization.

12011222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272982338 (or 272982336 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12011222212 its reverse (21222211021), we get a palindrome (33233433233).

The spelling of 12011222212 in words is "twelve billion, eleven million, two hundred twenty-two thousand, two hundred twelve".