11211231230 has 32 divisors (see below), whose sum is σ = 21660014304. Its totient is φ = 4162876416.

The previous prime is 11211231223. The next prime is 11211231253. The reversal of 11211231230 is 3213211211.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a junction number, because it is equal to n+sod(n) for n = 11211231199 and 11211231208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 439292 + ... + 464111.

It is an arithmetic number, because the mean of its divisors is an integer number (676875447).

Almost surely, 2^11211231230 is an apocalyptic number.

11211231230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11211231230 is a deficient number, since it is larger than the sum of its proper divisors (10448783074).

11211231230 is a wasteful number, since it uses less digits than its factorization.

11211231230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903500.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11211231230 its reverse (3213211211), we get a palindrome (14424442441).

The spelling of 11211231230 in words is "eleven billion, two hundred eleven million, two hundred thirty-one thousand, two hundred thirty".