20011100120203 has 2 divisors, whose sum is σ = 20011100120204. Its totient is φ = 20011100120202.

The previous prime is 20011100120159. The next prime is 20011100120239. The reversal of 20011100120203 is 30202100111002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20011100120203 - 2²⁹ = 20010563249291 is a prime.

It is a super-2 number, since 2×20011100120203² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20011100120273) 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 as a sum of consecutive naturals, namely, 10005550060101 + 10005550060102.

It is an arithmetic number, because the mean of its divisors is an integer number (10005550060102).

Almost surely, 2^{20011100120203} is an apocalyptic number.

20011100120203 is a deficient number, since it is larger than the sum of its proper divisors (1).

20011100120203 is an equidigital number, since it uses as much as digits as its factorization.

20011100120203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20011100120203 its reverse (30202100111002), we get a palindrome (50213200231205).

The spelling of 20011100120203 in words is "twenty trillion, eleven billion, one hundred million, one hundred twenty thousand, two hundred three".