11043220421001 has 4 divisors (see below), whose sum is σ = 14724293894672. Its totient is φ = 7362146947332.

The previous prime is 11043220420979. The next prime is 11043220421011. The reversal of 11043220421001 is 10012402234011.

11043220421001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 11043220421001 - 2⁷ = 11043220420873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11043220421011) 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, 1840536736831 + ... + 1840536736836.

It is an arithmetic number, because the mean of its divisors is an integer number (3681073473668).

Almost surely, 2^{11043220421001} is an apocalyptic number.

It is an amenable number.

11043220421001 is a deficient number, since it is larger than the sum of its proper divisors (3681073473671).

11043220421001 is an equidigital number, since it uses as much as digits as its factorization.

11043220421001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3681073473670.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 11043220421001 its reverse (10012402234011), we get a palindrome (21055622655012).

The spelling of 11043220421001 in words is "eleven trillion, forty-three billion, two hundred twenty million, four hundred twenty-one thousand, one".