20001203 has 2 divisors, whose sum is σ = 20001204. Its totient is φ = 20001202.

The previous prime is 20001181. The next prime is 20001217. The reversal of 20001203 is 30210002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20001203 - 2⁶ = 20001139 is a prime.

It is not a weakly prime, because it can be changed into another prime (20001253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000601 + 10000602.

It is an arithmetic number, because the mean of its divisors is an integer number (10000602).

Almost surely, 2^20001203 is an apocalyptic number.

20001203 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001203 is an equidigital number, since it uses as much as digits as its factorization.

20001203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 20001203 is about 4472.2704524660. The cubic root of 20001203 is about 271.4472039577.

Adding to 20001203 its reverse (30210002), we get a palindrome (50211205).

The spelling of 20001203 in words is "twenty million, one thousand, two hundred three".