20121122230 has 32 divisors (see below), whose sum is σ = 40180250880. Its totient is φ = 7192756320.

The previous prime is 20121122209. The next prime is 20121122237. The reversal of 20121122230 is 3222112102.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121122237) by changing a digit.

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, 1543674 + ... + 1556653.

It is an arithmetic number, because the mean of its divisors is an integer number (1255632840).

Almost surely, 2^20121122230 is an apocalyptic number.

20121122230 is a deficient number, since it is larger than the sum of its proper divisors (20059128650).

20121122230 is a wasteful number, since it uses less digits than its factorization.

20121122230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3100404.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20121122230 its reverse (3222112102), we get a palindrome (23343234332).

The spelling of 20121122230 in words is "twenty billion, one hundred twenty-one million, one hundred twenty-two thousand, two hundred thirty".