13121220210612 has 24 divisors (see below), whose sum is σ = 31947318774336. Its totient is φ = 4183577458368.

The previous prime is 13121220210577. The next prime is 13121220210613. The reversal of 13121220210612 is 21601202212131.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13121220210613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23770326193 + ... + 23770326744.

It is an arithmetic number, because the mean of its divisors is an integer number (1331138282264).

Almost surely, 2^{13121220210612} is an apocalyptic number.

13121220210612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13121220210612 is an abundant number, since it is smaller than the sum of its proper divisors (18826098563724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13121220210612 is a wasteful number, since it uses less digits than its factorization.

13121220210612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47540652967 (or 47540652965 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 13121220210612 its reverse (21601202212131), we get a palindrome (34722422422743).

The spelling of 13121220210612 in words is "thirteen trillion, one hundred twenty-one billion, two hundred twenty million, two hundred ten thousand, six hundred twelve".