12431031221212 has 12 divisors (see below), whose sum is σ = 21755199420360. Its totient is φ = 6215259958256.

The previous prime is 12431031221137. The next prime is 12431031221281. The reversal of 12431031221212 is 21212213013421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63803662 + ... + 63998197.

It is an arithmetic number, because the mean of its divisors is an integer number (1812933285030).

Almost surely, 2^{12431031221212} is an apocalyptic number.

It is an amenable number.

12431031221212 is a deficient number, since it is larger than the sum of its proper divisors (9324168199148).

12431031221212 is a wasteful number, since it uses less digits than its factorization.

12431031221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127826180 (or 127826178 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 12431031221212 its reverse (21212213013421), we get a palindrome (33643244234633).

The spelling of 12431031221212 in words is "twelve trillion, four hundred thirty-one billion, thirty-one million, two hundred twenty-one thousand, two hundred twelve".