11200323121 has 4 divisors (see below), whose sum is σ = 12061886452. Its totient is φ = 10338759792.

The previous prime is 11200323107. The next prime is 11200323151. The reversal of 11200323121 is 12132300211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12132300211 = 1997 ⋅6075263.

It can be written as a sum of positive squares in 2 ways, for example, as 680949025 + 10519374096 = 26095^2 + 102564^2 .

It is a cyclic number.

It is not a de Polignac number, because 11200323121 - 2⁵ = 11200323089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11200323095 and 11200323104.

It is not an unprimeable number, because it can be changed into a prime (11200323151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 430781646 + ... + 430781671.

It is an arithmetic number, because the mean of its divisors is an integer number (3015471613).

Almost surely, 2^11200323121 is an apocalyptic number.

It is an amenable number.

11200323121 is a deficient number, since it is larger than the sum of its proper divisors (861563331).

11200323121 is an equidigital number, since it uses as much as digits as its factorization.

11200323121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861563330.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 11200323121 its reverse (12132300211), we get a palindrome (23332623332).

The spelling of 11200323121 in words is "eleven billion, two hundred million, three hundred twenty-three thousand, one hundred twenty-one".