11143220 has 24 divisors (see below), whose sum is σ = 25528608. Its totient is φ = 4052000.

The previous prime is 11143219. The next prime is 11143243. The reversal of 11143220 is 2234111.

It is a junction number, because it is equal to n+sod(n) for n = 11143195 and 11143204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25106 + ... + 25545.

It is an arithmetic number, because the mean of its divisors is an integer number (1063692).

Almost surely, 2^11143220 is an apocalyptic number.

11143220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11143220 is an abundant number, since it is smaller than the sum of its proper divisors (14385388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11143220 is a wasteful number, since it uses less digits than its factorization.

11143220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50671 (or 50669 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 11143220 is about 3338.1461921252. The cubic root of 11143220 is about 223.3590574562.

Adding to 11143220 its reverse (2234111), we get a palindrome (13377331).

It can be divided in two parts, 1114 and 3220, that added together give a palindrome (4334).

The spelling of 11143220 in words is "eleven million, one hundred forty-three thousand, two hundred twenty".