11010101122121 has 4 divisors (see below), whose sum is σ = 11096794831872. Its totient is φ = 10923407412372.

The previous prime is 11010101122103. The next prime is 11010101122129. The reversal of 11010101122121 is 12122110101011.

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 a de Polignac number, because none of the positive numbers 2^k-11010101122121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11010101122096 and 11010101122105.

It is not an unprimeable number, because it can be changed into a prime (11010101122129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43346854685 + ... + 43346854938.

It is an arithmetic number, because the mean of its divisors is an integer number (2774198707968).

Almost surely, 2^{11010101122121} is an apocalyptic number.

It is an amenable number.

11010101122121 is a deficient number, since it is larger than the sum of its proper divisors (86693709751).

11010101122121 is an equidigital number, since it uses as much as digits as its factorization.

11010101122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86693709750.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11010101122121 its reverse (12122110101011), we get a palindrome (23132211223132).

The spelling of 11010101122121 in words is "eleven trillion, ten billion, one hundred one million, one hundred twenty-two thousand, one hundred twenty-one".