11011032121 has 16 divisors (see below), whose sum is σ = 11670046848. Its totient is φ = 10367280000.

The previous prime is 11011032079. The next prime is 11011032157. The reversal of 11011032121 is 12123011011.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11011032121 - 2¹⁷ = 11010901049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11011032181) 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 15 ways as a sum of consecutive naturals, for example, 3667621 + ... + 3670621.

It is an arithmetic number, because the mean of its divisors is an integer number (729377928).

Almost surely, 2^11011032121 is an apocalyptic number.

It is an amenable number.

11011032121 is a deficient number, since it is larger than the sum of its proper divisors (659014727).

11011032121 is a wasteful number, since it uses less digits than its factorization.

11011032121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5472.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 11011032121 its reverse (12123011011), we get a palindrome (23134043132).

The spelling of 11011032121 in words is "eleven billion, eleven million, thirty-two thousand, one hundred twenty-one".