20121203323 has 16 divisors (see below), whose sum is σ = 22644711936. Its totient is φ = 17755466400.

The previous prime is 20121203309. The next prime is 20121203339. The reversal of 20121203323 is 32330212102.

It is a cyclic number.

It is not a de Polignac number, because 20121203323 - 2⁹ = 20121202811 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 20121203323.

It is not an unprimeable number, because it can be changed into a prime (20121203363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 356653 + ... + 409198.

It is an arithmetic number, because the mean of its divisors is an integer number (1415294496).

Almost surely, 2^20121203323 is an apocalyptic number.

20121203323 is a deficient number, since it is larger than the sum of its proper divisors (2523508613).

20121203323 is a wasteful number, since it uses less digits than its factorization.

20121203323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765954.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20121203323 its reverse (32330212102), we get a palindrome (52451415425).

The spelling of 20121203323 in words is "twenty billion, one hundred twenty-one million, two hundred three thousand, three hundred twenty-three".