11013023121 has 4 divisors (see below), whose sum is σ = 14684030832. Its totient is φ = 7342015412.

The previous prime is 11013023083. The next prime is 11013023123. The reversal of 11013023121 is 12132031011.

It is a happy number.

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 11013023121 - 2¹⁵ = 11012990353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11013023121.

It is not an unprimeable number, because it can be changed into a prime (11013023123) 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, 1835503851 + ... + 1835503856.

It is an arithmetic number, because the mean of its divisors is an integer number (3671007708).

Almost surely, 2^11013023121 is an apocalyptic number.

It is an amenable number.

11013023121 is a deficient number, since it is larger than the sum of its proper divisors (3671007711).

11013023121 is an equidigital number, since it uses as much as digits as its factorization.

11013023121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3671007710.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 11013023121 its reverse (12132031011), we get a palindrome (23145054132).

The spelling of 11013023121 in words is "eleven billion, thirteen million, twenty-three thousand, one hundred twenty-one".