11013421 has 4 divisors (see below), whose sum is σ = 11081152. Its totient is φ = 10945692.

The previous prime is 11013397. The next prime is 11013427. The reversal of 11013421 is 12431011.

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: 12431011 = 1567 ⋅7933.

It is a cyclic number.

It is not a de Polignac number, because 11013421 - 2⁹ = 11012909 is a prime.

It is a super-3 number, since 3×11013421³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11013427) 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, 33621 + ... + 33946.

It is an arithmetic number, because the mean of its divisors is an integer number (2770288).

Almost surely, 2^11013421 is an apocalyptic number.

It is an amenable number.

11013421 is a deficient number, since it is larger than the sum of its proper divisors (67731).

11013421 is an equidigital number, since it uses as much as digits as its factorization.

11013421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67730.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 11013421 is about 3318.6474654594. The cubic root of 11013421 is about 222.4884208930.

Adding to 11013421 its reverse (12431011), we get a palindrome (23444432).

It can be divided in two parts, 110 and 13421, that added together give a palindrome (13531).

The spelling of 11013421 in words is "eleven million, thirteen thousand, four hundred twenty-one".