12013121112012 has 48 divisors (see below), whose sum is σ = 31146955056000. Its totient is φ = 4004138900880.

The previous prime is 12013121111951. The next prime is 12013121112049. The reversal of 12013121112012 is 21021112131021.

It is a happy number.

12013121112012 is a `hidden beast` number, since 120 + 131 + 211 + 1 + 201 + 2 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1405914 + ... + 5099297.

It is an arithmetic number, because the mean of its divisors is an integer number (648894897000).

Almost surely, 2^{12013121112012} is an apocalyptic number.

12013121112012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12013121112012 is an abundant number, since it is smaller than the sum of its proper divisors (19133833943988).

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

12013121112012 is a wasteful number, since it uses less digits than its factorization.

12013121112012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6522323 (or 6522315 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 12013121112012 its reverse (21021112131021), we get a palindrome (33034233243033).

The spelling of 12013121112012 in words is "twelve trillion, thirteen billion, one hundred twenty-one million, one hundred twelve thousand, twelve".