121321133140013 has 4 divisors (see below), whose sum is σ = 121375318552320. Its totient is φ = 121266947727708.

The previous prime is 121321133139961. The next prime is 121321133140073. The reversal of 121321133140013 is 310041331123121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121321133140013 - 2¹⁴ = 121321133123629 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 (121321133140073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27092702795 + ... + 27092707272.

It is an arithmetic number, because the mean of its divisors is an integer number (30343829638080).

Almost surely, 2^{121321133140013} is an apocalyptic number.

It is an amenable number.

121321133140013 is a deficient number, since it is larger than the sum of its proper divisors (54185412307).

121321133140013 is an equidigital number, since it uses as much as digits as its factorization.

121321133140013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54185412306.

The product of its (nonzero) digits is 1296, while the sum is 26.

Adding to 121321133140013 its reverse (310041331123121), we get a palindrome (431362464263134).

The spelling of 121321133140013 in words is "one hundred twenty-one trillion, three hundred twenty-one billion, one hundred thirty-three million, one hundred forty thousand, thirteen".