11721230 has 32 divisors (see below), whose sum is σ = 21997440. Its totient is φ = 4492800.

The previous prime is 11721223. The next prime is 11721239. The reversal of 11721230 is 3212711.

11721230 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 11721199 and 11721208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11721239) 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, 29030 + ... + 29430.

It is an arithmetic number, because the mean of its divisors is an integer number (687420).

Almost surely, 2^11721230 is an apocalyptic number.

11721230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11721230 is a deficient number, since it is larger than the sum of its proper divisors (10276210).

11721230 is a wasteful number, since it uses less digits than its factorization.

11721230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 11721230 is about 3423.6281924298. The cubic root of 11721230 is about 227.1560959394.

Adding to 11721230 its reverse (3212711), we get a palindrome (14933941).

The spelling of 11721230 in words is "eleven million, seven hundred twenty-one thousand, two hundred thirty".