13121210313212 has 24 divisors (see below), whose sum is σ = 23311538970720. Its totient is φ = 6461491435200.

The previous prime is 13121210313191. The next prime is 13121210313259. The reversal of 13121210313212 is 21231301212131.

It is a happy number.

It is a super-2 number, since 2×13121210313212² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90030539 + ... + 90176162.

It is an arithmetic number, because the mean of its divisors is an integer number (971314123780).

Almost surely, 2^{13121210313212} is an apocalyptic number.

It is an amenable number.

13121210313212 is a deficient number, since it is larger than the sum of its proper divisors (10190328657508).

13121210313212 is a wasteful number, since it uses less digits than its factorization.

13121210313212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180206981 (or 180206979 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 13121210313212 its reverse (21231301212131), we get a palindrome (34352511525343).

The spelling of 13121210313212 in words is "thirteen trillion, one hundred twenty-one billion, two hundred ten million, three hundred thirteen thousand, two hundred twelve".