20111144203 has 8 divisors (see below), whose sum is σ = 20493416016. Its totient is φ = 19728976800.

The previous prime is 20111144189. The next prime is 20111144231. The reversal of 20111144203 is 30244111102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20111144203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20111144003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 441568 + ... + 484978.

It is an arithmetic number, because the mean of its divisors is an integer number (2561677002).

Almost surely, 2^20111144203 is an apocalyptic number.

20111144203 is a deficient number, since it is larger than the sum of its proper divisors (382271813).

20111144203 is an equidigital number, since it uses as much as digits as its factorization.

20111144203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52205.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 20111144203 its reverse (30244111102), we get a palindrome (50355255305).

The spelling of 20111144203 in words is "twenty billion, one hundred eleven million, one hundred forty-four thousand, two hundred three".