12081199012 has 6 divisors (see below), whose sum is σ = 21142098278. Its totient is φ = 6040599504.

The previous prime is 12081198991. The next prime is 12081199019. The reversal of 12081199012 is 21099118021.

It can be written as a sum of positive squares in only one way, i.e., 6917914276 + 5163284736 = 83174^2 + 71856^2 .

It is a super-2 number, since 2×12081199012² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12081199019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1510149873 + ... + 1510149880.

Almost surely, 2^12081199012 is an apocalyptic number.

It is an amenable number.

12081199012 is a deficient number, since it is larger than the sum of its proper divisors (9060899266).

12081199012 is a wasteful number, since it uses less digits than its factorization.

12081199012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3020299757 (or 3020299755 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 34.

The spelling of 12081199012 in words is "twelve billion, eighty-one million, one hundred ninety-nine thousand, twelve".