13121210131421 has 8 divisors (see below), whose sum is σ = 14996559811584. Its totient is φ = 11246083223760.

The previous prime is 13121210131369. The next prime is 13121210131427. The reversal of 13121210131421 is 12413101212131.

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

It is not a de Polignac number, because 13121210131421 - 2¹⁴ = 13121210115037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13121210131427) 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, 55566890 + ... + 55802523.

It is an arithmetic number, because the mean of its divisors is an integer number (1874569976448).

Almost surely, 2^{13121210131421} is an apocalyptic number.

It is an amenable number.

13121210131421 is a deficient number, since it is larger than the sum of its proper divisors (1875349680163).

13121210131421 is a wasteful number, since it uses less digits than its factorization.

13121210131421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111386251.

The product of its (nonzero) digits is 288, while the sum is 23.

Adding to 13121210131421 its reverse (12413101212131), we get a palindrome (25534311343552).

The spelling of 13121210131421 in words is "thirteen trillion, one hundred twenty-one billion, two hundred ten million, one hundred thirty-one thousand, four hundred twenty-one".