13121323223212 has 48 divisors (see below), whose sum is σ = 23876683084800. Its totient is φ = 6306000704640.

The previous prime is 13121323223191. The next prime is 13121323223221. The reversal of 13121323223212 is 21232232312131.

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, 1496089 + ... + 5336752.

It is an arithmetic number, because the mean of its divisors is an integer number (497430897600).

Almost surely, 2^{13121323223212} is an apocalyptic number.

It is an amenable number.

13121323223212 is a deficient number, since it is larger than the sum of its proper divisors (10755359861588).

13121323223212 is a wasteful number, since it uses less digits than its factorization.

13121323223212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6833086 (or 6833084 counting only the distinct ones).

The product of its digits is 5184, while the sum is 28.

Adding to 13121323223212 its reverse (21232232312131), we get a palindrome (34353555535343).

The spelling of 13121323223212 in words is "thirteen trillion, one hundred twenty-one billion, three hundred twenty-three million, two hundred twenty-three thousand, two hundred twelve".