121335043013 has 16 divisors (see below), whose sum is σ = 124733855232. Its totient is φ = 117957840000.

The previous prime is 121335043003. The next prime is 121335043031. The reversal of 121335043013 is 310340533121.

It is a cyclic number.

It is not a de Polignac number, because 121335043013 - 2²⁴ = 121318265797 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121335043003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16963988 + ... + 16971138.

It is an arithmetic number, because the mean of its divisors is an integer number (7795865952).

Almost surely, 2^121335043013 is an apocalyptic number.

It is an amenable number.

121335043013 is a deficient number, since it is larger than the sum of its proper divisors (3398812219).

121335043013 is an equidigital number, since it uses as much as digits as its factorization.

121335043013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8596.

The product of its (nonzero) digits is 3240, while the sum is 26.

Adding to 121335043013 its reverse (310340533121), we get a palindrome (431675576134).

The spelling of 121335043013 in words is "one hundred twenty-one billion, three hundred thirty-five million, forty-three thousand, thirteen".