12421112012 has 24 divisors (see below), whose sum is σ = 22176467712. Its totient is φ = 6085289600.

The previous prime is 12421111979. The next prime is 12421112017. The reversal of 12421112012 is 21021112421.

It is a super-2 number, since 2×12421112012² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12421112017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122837 + ... + 199827.

It is an arithmetic number, because the mean of its divisors is an integer number (924019488).

Almost surely, 2^12421112012 is an apocalyptic number.

It is an amenable number.

12421112012 is a deficient number, since it is larger than the sum of its proper divisors (9755355700).

12421112012 is a wasteful number, since it uses less digits than its factorization.

12421112012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77809 (or 77807 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12421112012 its reverse (21021112421), we get a palindrome (33442224433).

The spelling of 12421112012 in words is "twelve billion, four hundred twenty-one million, one hundred twelve thousand, twelve".