11211122100121 has 4 divisors (see below), whose sum is σ = 11211455808000. Its totient is φ = 11210788392244.

The previous prime is 11211122100109. The next prime is 11211122100131. The reversal of 11211122100121 is 12100122111211.

11211122100121 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 11211122100121 - 2⁵ = 11211122100089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11211122100095 and 11211122100104.

It is not an unprimeable number, because it can be changed into a prime (11211122100131) 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, 166803541 + ... + 166870738.

It is an arithmetic number, because the mean of its divisors is an integer number (2802863952000).

Almost surely, 2^{11211122100121} is an apocalyptic number.

It is an amenable number.

11211122100121 is a deficient number, since it is larger than the sum of its proper divisors (333707879).

11211122100121 is an equidigital number, since it uses as much as digits as its factorization.

11211122100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333707878.

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

Adding to 11211122100121 its reverse (12100122111211), we get a palindrome (23311244211332).

The spelling of 11211122100121 in words is "eleven trillion, two hundred eleven billion, one hundred twenty-two million, one hundred thousand, one hundred twenty-one".