11012110121 has 4 divisors (see below), whose sum is σ = 11151504000. Its totient is φ = 10872716244.

The previous prime is 11012110103. The next prime is 11012110133. The reversal of 11012110121 is 12101121011.

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-11012110121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11012110141) 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, 69696821 + ... + 69696978.

It is an arithmetic number, because the mean of its divisors is an integer number (2787876000).

Almost surely, 2^11012110121 is an apocalyptic number.

It is an amenable number.

11012110121 is a deficient number, since it is larger than the sum of its proper divisors (139393879).

11012110121 is an equidigital number, since it uses as much as digits as its factorization.

11012110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139393878.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 11012110121 its reverse (12101121011), we get a palindrome (23113231132).

The spelling of 11012110121 in words is "eleven billion, twelve million, one hundred ten thousand, one hundred twenty-one".