11213421001 has 4 divisors (see below), whose sum is σ = 11234944404. Its totient is φ = 11191897600.

The previous prime is 11213420963. The next prime is 11213421013. The reversal of 11213421001 is 10012431211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10012431211 = 1049 ⋅9544739.

It can be written as a sum of positive squares in 2 ways, for example, as 1022720400 + 10190700601 = 31980^2 + 100949^2 .

It is a cyclic number.

It is not a de Polignac number, because 11213421001 - 2⁹ = 11213420489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11213421061) 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, 10760920 + ... + 10761961.

It is an arithmetic number, because the mean of its divisors is an integer number (2808736101).

Almost surely, 2^11213421001 is an apocalyptic number.

It is an amenable number.

11213421001 is a deficient number, since it is larger than the sum of its proper divisors (21523403).

11213421001 is an equidigital number, since it uses as much as digits as its factorization.

11213421001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21523402.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 11213421001 its reverse (10012431211), we get a palindrome (21225852212).

The spelling of 11213421001 in words is "eleven billion, two hundred thirteen million, four hundred twenty-one thousand, one".