20120320203 has 16 divisors (see below), whose sum is σ = 27160945056. Its totient is φ = 13247467520.

The previous prime is 20120320201. The next prime is 20120320211. The reversal of 20120320203 is 30202302102.

It is a cyclic number.

It is not a de Polignac number, because 20120320203 - 2¹ = 20120320201 is a prime.

It is a super-2 number, since 2×20120320203² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20120320201) 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, 10350 + ... + 200867.

It is an arithmetic number, because the mean of its divisors is an integer number (1697559066).

Almost surely, 2^20120320203 is an apocalyptic number.

20120320203 is a deficient number, since it is larger than the sum of its proper divisors (7040624853).

20120320203 is a wasteful number, since it uses less digits than its factorization.

20120320203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211614.

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 20120320203 its reverse (30202302102), we get a palindrome (50322622305).

The spelling of 20120320203 in words is "twenty billion, one hundred twenty million, three hundred twenty thousand, two hundred three".