11202423121 has 4 divisors (see below), whose sum is σ = 11202880000. Its totient is φ = 11201966244.

The previous prime is 11202423119. The next prime is 11202423179. The reversal of 11202423121 is 12132420211.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12132420211 = 149 ⋅81425639.

It is a cyclic number.

It is not a de Polignac number, because 11202423121 - 2¹ = 11202423119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11202453121) 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, 189441 + ... + 241438.

It is an arithmetic number, because the mean of its divisors is an integer number (2800720000).

Almost surely, 2^11202423121 is an apocalyptic number.

It is an amenable number.

11202423121 is a deficient number, since it is larger than the sum of its proper divisors (456879).

11202423121 is an equidigital number, since it uses as much as digits as its factorization.

11202423121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456878.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 11202423121 its reverse (12132420211), we get a palindrome (23334843332).

The spelling of 11202423121 in words is "eleven billion, two hundred two million, four hundred twenty-three thousand, one hundred twenty-one".