13121212322212 has 12 divisors (see below), whose sum is σ = 22969672430796. Its totient is φ = 6558448770560.

The previous prime is 13121212322177. The next prime is 13121212322249. The reversal of 13121212322212 is 21222321212131.

It can be written as a sum of positive squares in 2 ways, for example, as 13041877713316 + 79334608896 = 3611354^2 + 281664^2 .

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, 539333953 + ... + 539358280.

It is an arithmetic number, because the mean of its divisors is an integer number (1914139369233).

Almost surely, 2^{13121212322212} is an apocalyptic number.

It is an amenable number.

13121212322212 is a deficient number, since it is larger than the sum of its proper divisors (9848460108584).

13121212322212 is a wasteful number, since it uses less digits than its factorization.

13121212322212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078695278 (or 1078695276 counting only the distinct ones).

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

Adding to 13121212322212 its reverse (21222321212131), we get a palindrome (34343533534343).

The spelling of 13121212322212 in words is "thirteen trillion, one hundred twenty-one billion, two hundred twelve million, three hundred twenty-two thousand, two hundred twelve".