11121212010121 has 4 divisors (see below), whose sum is σ = 11122490466000. Its totient is φ = 11119933554244.

The previous prime is 11121212010037. The next prime is 11121212010187. The reversal of 11121212010121 is 12101021212111.

11121212010121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11121212010121 - 2²³ = 11121203621513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11121212010095 and 11121212010104.

It is not an unprimeable number, because it can be changed into a prime (11121212050121) 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, 639214891 + ... + 639232288.

It is an arithmetic number, because the mean of its divisors is an integer number (2780622616500).

Almost surely, 2^{11121212010121} is an apocalyptic number.

It is an amenable number.

11121212010121 is a deficient number, since it is larger than the sum of its proper divisors (1278455879).

11121212010121 is an equidigital number, since it uses as much as digits as its factorization.

11121212010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278455878.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 11121212010121 its reverse (12101021212111), we get a palindrome (23222233222232).

The spelling of 11121212010121 in words is "eleven trillion, one hundred twenty-one billion, two hundred twelve million, ten thousand, one hundred twenty-one".