11136421 has 8 divisors (see below), whose sum is σ = 11404800. Its totient is φ = 10871280.

The previous prime is 11136383. The next prime is 11136431. The reversal of 11136421 is 12463111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11136421 - 2¹⁷ = 11005349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11136431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7020 + ... + 8458.

It is an arithmetic number, because the mean of its divisors is an integer number (1425600).

Almost surely, 2^11136421 is an apocalyptic number.

It is an amenable number.

11136421 is a deficient number, since it is larger than the sum of its proper divisors (268379).

11136421 is a wasteful number, since it uses less digits than its factorization.

11136421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1619.

The product of its digits is 144, while the sum is 19.

The square root of 11136421 is about 3337.1276571327. The cubic root of 11136421 is about 223.3136209428.

Adding to 11136421 its reverse (12463111), we get a palindrome (23599532).

The spelling of 11136421 in words is "eleven million, one hundred thirty-six thousand, four hundred twenty-one".