12121312012 has 6 divisors (see below), whose sum is σ = 21212296028. Its totient is φ = 6060656004.

The previous prime is 12121312003. The next prime is 12121312043. The reversal of 12121312012 is 21021312121.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1515163998 + ... + 1515164005.

Almost surely, 2^12121312012 is an apocalyptic number.

It is an amenable number.

12121312012 is a deficient number, since it is larger than the sum of its proper divisors (9090984016).

12121312012 is a wasteful number, since it uses less digits than its factorization.

12121312012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3030328007 (or 3030328005 counting only the distinct ones).

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

Adding to 12121312012 its reverse (21021312121), we get a palindrome (33142624133).

It can be divided in two parts, 121213 and 12012, that added together give a square (133225 = 365²).

The spelling of 12121312012 in words is "twelve billion, one hundred twenty-one million, three hundred twelve thousand, twelve".