11152421 has 8 divisors (see below), whose sum is σ = 12768000. Its totient is φ = 9542448.

The previous prime is 11152417. The next prime is 11152439. The reversal of 11152421 is 12425111.

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 11152421 - 2² = 11152417 is a prime.

It is a super-2 number, since 2×11152421² = 248752988322482, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11152421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11152441) 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, 4580 + ... + 6578.

It is an arithmetic number, because the mean of its divisors is an integer number (1596000).

Almost surely, 2^11152421 is an apocalyptic number.

It is an amenable number.

11152421 is a deficient number, since it is larger than the sum of its proper divisors (1615579).

11152421 is an equidigital number, since it uses as much as digits as its factorization.

11152421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2803.

The product of its digits is 80, while the sum is 17.

The square root of 11152421 is about 3339.5240678875. The cubic root of 11152421 is about 223.4205166905.

Adding to 11152421 its reverse (12425111), we get a palindrome (23577532).

The spelling of 11152421 in words is "eleven million, one hundred fifty-two thousand, four hundred twenty-one".