2021939203 has 2 divisors, whose sum is σ = 2021939204. Its totient is φ = 2021939202.

The previous prime is 2021939197. The next prime is 2021939237. The reversal of 2021939203 is 3029391202.

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-2021939203 is a prime.

It is not a weakly prime, because it can be changed into another prime (2021939243) 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, 1010969601 + 1010969602.

It is an arithmetic number, because the mean of its divisors is an integer number (1010969602).

Almost surely, 2^2021939203 is an apocalyptic number.

2021939203 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021939203 is an equidigital number, since it uses as much as digits as its factorization.

2021939203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 2021939203 is about 44965.9782835868. The cubic root of 2021939203 is about 1264.5112503099.

The spelling of 2021939203 in words is "two billion, twenty-one million, nine hundred thirty-nine thousand, two hundred three".