11041321421421 has 20 divisors (see below), whose sum is σ = 16537345202400. Its totient is φ = 7341459077736.

The previous prime is 11041321421413. The next prime is 11041321421423. The reversal of 11041321421421 is 12412412314011.

11041321421421 is a `hidden beast` number, since 1 + 1 + 0 + 4 + 1 + 3 + 214 + 21 + 421 = 666.

It is not a de Polignac number, because 11041321421421 - 2³ = 11041321421413 is a prime.

It is a super-2 number, since 2×11041321421421² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11041321421423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 179801241 + ... + 179862638.

It is an arithmetic number, because the mean of its divisors is an integer number (826867260120).

Almost surely, 2^{11041321421421} is an apocalyptic number.

It is an amenable number.

11041321421421 is a deficient number, since it is larger than the sum of its proper divisors (5496023780979).

11041321421421 is an equidigital number, since it uses as much as digits as its factorization.

11041321421421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359664270 (or 359664261 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

Adding to 11041321421421 its reverse (12412412314011), we get a palindrome (23453733735432).

The spelling of 11041321421421 in words is "eleven trillion, forty-one billion, three hundred twenty-one million, four hundred twenty-one thousand, four hundred twenty-one".