20012203 has 2 divisors, whose sum is σ = 20012204. Its totient is φ = 20012202.

The previous prime is 20012191. The next prime is 20012207. The reversal of 20012203 is 30221002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20012203 - 2⁵ = 20012171 is a prime.

It is the 4474-th Hogben number.

It is a self number, because there is not a number n which added to its sum of digits gives 20012203.

It is not a weakly prime, because it can be changed into another prime (20012207) by changing a digit.

It is a nontrivial repunit in base 4473.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006101 + 10006102.

It is an arithmetic number, because the mean of its divisors is an integer number (10006102).

Almost surely, 2^20012203 is an apocalyptic number.

20012203 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012203 is an equidigital number, since it uses as much as digits as its factorization.

20012203 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 10.

The square root of 20012203 is about 4473.5000838270. The cubic root of 20012203 is about 271.4969571655.

Adding to 20012203 its reverse (30221002), we get a palindrome (50233205).

It can be divided in two parts, 200 and 12203, that added together give a triangular number (12403 = T₁₅₇).

The spelling of 20012203 in words is "twenty million, twelve thousand, two hundred three".