2120203919 has 2 divisors, whose sum is σ = 2120203920. Its totient is φ = 2120203918.

The previous prime is 2120203907. The next prime is 2120203937. The reversal of 2120203919 is 9193020212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2120203919 - 2⁸ = 2120203663 is a prime.

It is a super-2 number, since 2×2120203919² = 8990529316285917122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2120203891 and 2120203900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120203979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060101959 + 1060101960.

It is an arithmetic number, because the mean of its divisors is an integer number (1060101960).

Almost surely, 2^2120203919 is an apocalyptic number.

2120203919 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120203919 is an equidigital number, since it uses as much as digits as its factorization.

2120203919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 2120203919 is about 46045.6720984720. The cubic root of 2120203919 is about 1284.6728451974.

The spelling of 2120203919 in words is "two billion, one hundred twenty million, two hundred three thousand, nine hundred nineteen".