11153421 has 6 divisors (see below), whose sum is σ = 16110510. Its totient is φ = 7435608.

The previous prime is 11153407. The next prime is 11153447. The reversal of 11153421 is 12435111.

11153421 is a `hidden beast` number, since 111 + 534 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7209225 + 3944196 = 2685^2 + 1986^2 .

It is not a de Polignac number, because 11153421 - 2⁹ = 11152909 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11153394 and 11153403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11153491) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 619626 + ... + 619643.

It is an arithmetic number, because the mean of its divisors is an integer number (2685085).

Almost surely, 2^11153421 is an apocalyptic number.

It is an amenable number.

11153421 is a deficient number, since it is larger than the sum of its proper divisors (4957089).

11153421 is a wasteful number, since it uses less digits than its factorization.

11153421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239275 (or 1239272 counting only the distinct ones).

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

The square root of 11153421 is about 3339.6737864648. The cubic root of 11153421 is about 223.4271942791.

Adding to 11153421 its reverse (12435111), we get a palindrome (23588532).

The spelling of 11153421 in words is "eleven million, one hundred fifty-three thousand, four hundred twenty-one".