12012121132 has 12 divisors (see below), whose sum is σ = 22932231336. Its totient is φ = 5460055040.

The previous prime is 12012121109. The next prime is 12012121201. The reversal of 12012121132 is 23112121021.

It is a super-2 number, since 2×12012121132² (a number of 21 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 136501333 + ... + 136501420.

It is an arithmetic number, because the mean of its divisors is an integer number (1911019278).

Almost surely, 2^12012121132 is an apocalyptic number.

It is an amenable number.

12012121132 is a deficient number, since it is larger than the sum of its proper divisors (10920110204).

12012121132 is a wasteful number, since it uses less digits than its factorization.

12012121132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273002768 (or 273002766 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12012121132 its reverse (23112121021), we get a palindrome (35124242153).

The spelling of 12012121132 in words is "twelve billion, twelve million, one hundred twenty-one thousand, one hundred thirty-two".