121314021311 has 4 divisors (see below), whose sum is σ = 138644595792. Its totient is φ = 103983446832.

The previous prime is 121314021307. The next prime is 121314021319. The reversal of 121314021311 is 113120413121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113120413121 = 172999 ⋅653879.

It is a cyclic number.

It is not a de Polignac number, because 121314021311 - 2² = 121314021307 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 (121314021319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8665287230 + ... + 8665287243.

It is an arithmetic number, because the mean of its divisors is an integer number (34661148948).

Almost surely, 2^121314021311 is an apocalyptic number.

121314021311 is a deficient number, since it is larger than the sum of its proper divisors (17330574481).

121314021311 is an equidigital number, since it uses as much as digits as its factorization.

121314021311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17330574480.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 121314021311 its reverse (113120413121), we get a palindrome (234434434432).

The spelling of 121314021311 in words is "one hundred twenty-one billion, three hundred fourteen million, twenty-one thousand, three hundred eleven".