12011012122212 has 72 divisors (see below), whose sum is σ = 33839074432800. Its totient is φ = 3569836416768.

The previous prime is 12011012122181. The next prime is 12011012122217. The reversal of 12011012122212 is 21222121011021.

12011012122212 is a `hidden beast` number, since 120 + 110 + 1 + 212 + 221 + 2 = 666.

It is a super-2 number, since 2×12011012122212² (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 not an unprimeable number, because it can be changed into a prime (12011012122217) by changing a digit.

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, 516457762 + ... + 516481017.

It is an arithmetic number, because the mean of its divisors is an integer number (469987144900).

Almost surely, 2^{12011012122212} is an apocalyptic number.

12011012122212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12011012122212 is an abundant number, since it is smaller than the sum of its proper divisors (21828062310588).

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

12011012122212 is a wasteful number, since it uses less digits than its factorization.

12011012122212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032938825 (or 1032938820 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12011012122212 its reverse (21222121011021), we get a palindrome (33233133133233).

The spelling of 12011012122212 in words is "twelve trillion, eleven billion, twelve million, one hundred twenty-two thousand, two hundred twelve".