11135421 has 16 divisors (see below), whose sum is σ = 17997120. Its totient is φ = 6748560.

The previous prime is 11135419. The next prime is 11135437. The reversal of 11135421 is 12453111.

It is not a de Polignac number, because 11135421 - 2¹ = 11135419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11135394 and 11135403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11135401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18450 + ... + 19043.

It is an arithmetic number, because the mean of its divisors is an integer number (1124820).

Almost surely, 2^11135421 is an apocalyptic number.

11135421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11135421 is a deficient number, since it is larger than the sum of its proper divisors (6861699).

11135421 is a wasteful number, since it uses less digits than its factorization.

11135421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37513 (or 37507 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 11135421 is about 3336.9778243195. The cubic root of 11135421 is about 223.3069365599.

Adding to 11135421 its reverse (12453111), we get a palindrome (23588532).

The spelling of 11135421 in words is "eleven million, one hundred thirty-five thousand, four hundred twenty-one".