12920203 has 2 divisors, whose sum is σ = 12920204. Its totient is φ = 12920202.

The previous prime is 12920183. The next prime is 12920239. The reversal of 12920203 is 30202921.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12920203 is a prime.

It is a super-2 number, since 2×12920203² = 333863291122418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12920003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6460101 + 6460102.

It is an arithmetic number, because the mean of its divisors is an integer number (6460102).

Almost surely, 2^12920203 is an apocalyptic number.

12920203 is a deficient number, since it is larger than the sum of its proper divisors (1).

12920203 is an equidigital number, since it uses as much as digits as its factorization.

12920203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 12920203 is about 3594.4683890667. The cubic root of 12920203 is about 234.6513798672.

The spelling of 12920203 in words is "twelve million, nine hundred twenty thousand, two hundred three".