20121122233 has 8 divisors (see below), whose sum is σ = 20226427200. Its totient is φ = 20015859600.

The previous prime is 20121122209. The next prime is 20121122237. The reversal of 20121122233 is 33222112102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20121122233 - 2²¹ = 20119025081 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20121122233.

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 7 ways as a sum of consecutive naturals, for example, 1489158 + ... + 1502608.

It is an arithmetic number, because the mean of its divisors is an integer number (2528303400).

Almost surely, 2^20121122233 is an apocalyptic number.

It is an amenable number.

20121122233 is a deficient number, since it is larger than the sum of its proper divisors (105304967).

20121122233 is a wasteful number, since it uses less digits than its factorization.

20121122233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21167.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20121122233 its reverse (33222112102), we get a palindrome (53343234335).

The spelling of 20121122233 in words is "twenty billion, one hundred twenty-one million, one hundred twenty-two thousand, two hundred thirty-three".