20011102230203 has 4 divisors (see below), whose sum is σ = 22869831120240. Its totient is φ = 17152373340168.

The previous prime is 20011102230181. The next prime is 20011102230239. The reversal of 20011102230203 is 30203220111002.

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 20011102230203 - 2¹² = 20011102226107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20011102230703) 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, 1429364445008 + ... + 1429364445021.

It is an arithmetic number, because the mean of its divisors is an integer number (5717457780060).

Almost surely, 2^{20011102230203} is an apocalyptic number.

20011102230203 is a deficient number, since it is larger than the sum of its proper divisors (2858728890037).

20011102230203 is an equidigital number, since it uses as much as digits as its factorization.

20011102230203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2858728890036.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20011102230203 its reverse (30203220111002), we get a palindrome (50214322341205).

The spelling of 20011102230203 in words is "twenty trillion, eleven billion, one hundred two million, two hundred thirty thousand, two hundred three".