11010121011 has 12 divisors (see below), whose sum is σ = 15906836400. Its totient is φ = 7338544560.

The previous prime is 11010120997. The next prime is 11010121019. The reversal of 11010121011 is 11012101011.

It is not a de Polignac number, because 11010121011 - 2¹¹ = 11010118963 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 11010120984 and 11010121002.

It is not an unprimeable number, because it can be changed into a prime (11010121019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81736 + ... + 169413.

It is an arithmetic number, because the mean of its divisors is an integer number (1325569700).

Almost surely, 2^11010121011 is an apocalyptic number.

11010121011 is a deficient number, since it is larger than the sum of its proper divisors (4896715389).

11010121011 is a wasteful number, since it uses less digits than its factorization.

11010121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256026 (or 256023 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 11010121011 its reverse (11012101011), we get a palindrome (22022222022).

The spelling of 11010121011 in words is "eleven billion, ten million, one hundred twenty-one thousand, eleven".