12011222212212 has 24 divisors (see below), whose sum is σ = 28070600686912. Its totient is φ = 3997395662400.

The previous prime is 12011222212211. The next prime is 12011222212217. The reversal of 12011222212212 is 21221222211021.

It is a super-2 number, since 2×12011222212212² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011222212211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 793126489 + ... + 793141632.

Almost surely, 2^{12011222212212} is an apocalyptic number.

12011222212212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12011222212212 is an abundant number, since it is smaller than the sum of its proper divisors (16059378474700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12011222212212 is a wasteful number, since it uses less digits than its factorization.

12011222212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1586268759 (or 1586268757 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 12011222212212 its reverse (21221222211021), we get a palindrome (33232444423233).

The spelling of 12011222212212 in words is "twelve trillion, eleven billion, two hundred twenty-two million, two hundred twelve thousand, two hundred twelve".