121330203311 has 4 divisors (see below), whose sum is σ = 128467274112. Its totient is φ = 114193132512.

The previous prime is 121330203299. The next prime is 121330203343. The reversal of 121330203311 is 113302033121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121330203311 - 2¹⁴ = 121330186927 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 (121330202311) 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, 3568535375 + ... + 3568535408.

It is an arithmetic number, because the mean of its divisors is an integer number (32116818528).

Almost surely, 2^121330203311 is an apocalyptic number.

121330203311 is a deficient number, since it is larger than the sum of its proper divisors (7137070801).

121330203311 is an equidigital number, since it uses as much as digits as its factorization.

121330203311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7137070800.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 121330203311 its reverse (113302033121), we get a palindrome (234632236432).

It can be divided in two parts, 1 and 21330203311, that added together give a palindrome (21330203312).

The spelling of 121330203311 in words is "one hundred twenty-one billion, three hundred thirty million, two hundred three thousand, three hundred eleven".