12121131321413 has 8 divisors (see below), whose sum is σ = 12836676029760. Its totient is φ = 11405868500160.

The previous prime is 12121131321367. The next prime is 12121131321473. The reversal of 12121131321413 is 31412313112121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12121131321413 - 2³⁶ = 12052411844677 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121131321473) 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, 70383233 + ... + 70555238.

It is an arithmetic number, because the mean of its divisors is an integer number (1604584503720).

Almost surely, 2^{12121131321413} is an apocalyptic number.

It is an amenable number.

12121131321413 is a deficient number, since it is larger than the sum of its proper divisors (715544708347).

12121131321413 is a wasteful number, since it uses less digits than its factorization.

12121131321413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140943547.

The product of its digits is 864, while the sum is 26.

Adding to 12121131321413 its reverse (31412313112121), we get a palindrome (43533444433534).

The spelling of 12121131321413 in words is "twelve trillion, one hundred twenty-one billion, one hundred thirty-one million, three hundred twenty-one thousand, four hundred thirteen".