11011110202121 has 4 divisors (see below), whose sum is σ = 11150491344000. Its totient is φ = 10871729060244.

The previous prime is 11011110202117. The next prime is 11011110202139. The reversal of 11011110202121 is 12120201111011.

11011110202121 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 11011110202121 - 2² = 11011110202117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11011110202096 and 11011110202105.

It is not an unprimeable number, because it can be changed into a prime (11011110202171) 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, 69690570821 + ... + 69690570978.

It is an arithmetic number, because the mean of its divisors is an integer number (2787622836000).

Almost surely, 2^{11011110202121} is an apocalyptic number.

It is an amenable number.

11011110202121 is a deficient number, since it is larger than the sum of its proper divisors (139381141879).

11011110202121 is an equidigital number, since it uses as much as digits as its factorization.

11011110202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139381141878.

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

Adding to 11011110202121 its reverse (12120201111011), we get a palindrome (23131311313132).

The spelling of 11011110202121 in words is "eleven trillion, eleven billion, one hundred ten million, two hundred two thousand, one hundred twenty-one".