20102111210203 has 16 divisors (see below), whose sum is σ = 22156472499840. Its totient is φ = 18085579948800.

The previous prime is 20102111210197. The next prime is 20102111210213. The reversal of 20102111210203 is 30201211120102.

It is a cyclic number.

It is not a de Polignac number, because 20102111210203 - 2⁵ = 20102111210171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20102111210213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29767228 + ... + 30435046.

It is an arithmetic number, because the mean of its divisors is an integer number (1384779531240).

Almost surely, 2^{20102111210203} is an apocalyptic number.

20102111210203 is a deficient number, since it is larger than the sum of its proper divisors (2054361289637).

20102111210203 is a wasteful number, since it uses less digits than its factorization.

20102111210203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696138.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 20102111210203 its reverse (30201211120102), we get a palindrome (50303322330305).

The spelling of 20102111210203 in words is "twenty trillion, one hundred two billion, one hundred eleven million, two hundred ten thousand, two hundred three".