121311121121333 has 16 divisors (see below), whose sum is σ = 145208403599616. Its totient is φ = 99878796114240.

The previous prime is 121311121121273. The next prime is 121311121121347. The reversal of 121311121121333 is 333121121113121.

It is not a de Polignac number, because 121311121121333 - 2⁶ = 121311121121269 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 (121311121121363) 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, 8003101085 + ... + 8003116242.

It is an arithmetic number, because the mean of its divisors is an integer number (9075525224976).

Almost surely, 2^{121311121121333} is an apocalyptic number.

121311121121333 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

121311121121333 is a deficient number, since it is larger than the sum of its proper divisors (23897282478283).

121311121121333 is a wasteful number, since it uses less digits than its factorization.

121311121121333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16006217404.

The product of its digits is 648, while the sum is 26.

Adding to 121311121121333 its reverse (333121121113121), we get a palindrome (454432242234454).

The spelling of 121311121121333 in words is "one hundred twenty-one trillion, three hundred eleven billion, one hundred twenty-one million, one hundred twenty-one thousand, three hundred thirty-three".