11330212121 has 4 divisors (see below), whose sum is σ = 11571280512. Its totient is φ = 11089143732.

The previous prime is 11330212097. The next prime is 11330212123. The reversal of 11330212121 is 12121203311.

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 11330212121 - 2¹⁰ = 11330211097 is a prime.

It is a super-3 number, since 3×11330212121³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11330212121.

It is not an unprimeable number, because it can be changed into a prime (11330212123) 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, 120534125 + ... + 120534218.

It is an arithmetic number, because the mean of its divisors is an integer number (2892820128).

Almost surely, 2^11330212121 is an apocalyptic number.

It is an amenable number.

11330212121 is a deficient number, since it is larger than the sum of its proper divisors (241068391).

11330212121 is an equidigital number, since it uses as much as digits as its factorization.

11330212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241068390.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11330212121 its reverse (12121203311), we get a palindrome (23451415432).

The spelling of 11330212121 in words is "eleven billion, three hundred thirty million, two hundred twelve thousand, one hundred twenty-one".