12011220222012 has 72 divisors (see below), whose sum is σ = 33216755098800. Its totient is φ = 3629334539520.

The previous prime is 12011220222007. The next prime is 12011220222031. The reversal of 12011220222012 is 21022202211021.

It is a happy number.

12011220222012 is a `hidden beast` number, since 120 + 112 + 202 + 220 + 12 = 666.

It is a super-2 number, since 2×12011220222012² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 23 ways as a sum of consecutive naturals, for example, 43316473 + ... + 43592880.

Almost surely, 2^{12011220222012} is an apocalyptic number.

12011220222012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12011220222012 is an abundant number, since it is smaller than the sum of its proper divisors (21205534876788).

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

12011220222012 is a wasteful number, since it uses less digits than its factorization.

12011220222012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86909723 (or 86909718 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12011220222012 its reverse (21022202211021), we get a palindrome (33033422433033).

The spelling of 12011220222012 in words is "twelve trillion, eleven billion, two hundred twenty million, two hundred twenty-two thousand, twelve".