20120120030203 has 4 divisors (see below), whose sum is σ = 20610854665128. Its totient is φ = 19629385395280.

The previous prime is 20120120030123. The next prime is 20120120030233. The reversal of 20120120030203 is 30203002102102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20120120030203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20120120030233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245367317401 + ... + 245367317482.

It is an arithmetic number, because the mean of its divisors is an integer number (5152713666282).

Almost surely, 2^{20120120030203} is an apocalyptic number.

20120120030203 is a deficient number, since it is larger than the sum of its proper divisors (490734634925).

20120120030203 is an equidigital number, since it uses as much as digits as its factorization.

20120120030203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490734634924.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20120120030203 its reverse (30203002102102), we get a palindrome (50323122132305).

The spelling of 20120120030203 in words is "twenty trillion, one hundred twenty billion, one hundred twenty million, thirty thousand, two hundred three".