20120013203 has 4 divisors (see below), whose sum is σ = 20120642088. Its totient is φ = 20119384320.

The previous prime is 20120013181. The next prime is 20120013253. The reversal of 20120013203 is 30231002102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20120013203 - 2⁸ = 20120012947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20120013253) 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 3 ways as a sum of consecutive naturals, for example, 263726 + ... + 331347.

It is an arithmetic number, because the mean of its divisors is an integer number (5030160522).

Almost surely, 2^20120013203 is an apocalyptic number.

20120013203 is a deficient number, since it is larger than the sum of its proper divisors (628885).

20120013203 is an equidigital number, since it uses as much as digits as its factorization.

20120013203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628884.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20120013203 its reverse (30231002102), we get a palindrome (50351015305).

The spelling of 20120013203 in words is "twenty billion, one hundred twenty million, thirteen thousand, two hundred three".