2120020403 has 2 divisors, whose sum is σ = 2120020404. Its totient is φ = 2120020402.

The previous prime is 2120020387. The next prime is 2120020417. The reversal of 2120020403 is 3040200212.

It is an a-pointer prime, because the next prime (2120020417) can be obtained adding 2120020403 to its sum of digits (14).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2120020403 - 2⁴ = 2120020387 is a prime.

It is not a weakly prime, because it can be changed into another prime (2120020433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060010201 + 1060010202.

It is an arithmetic number, because the mean of its divisors is an integer number (1060010202).

Almost surely, 2^2120020403 is an apocalyptic number.

2120020403 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120020403 is an equidigital number, since it uses as much as digits as its factorization.

2120020403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 2120020403 is about 46043.6792947740. The cubic root of 2120020403 is about 1284.6357788218.

Adding to 2120020403 its reverse (3040200212), we get a palindrome (5160220615).

The spelling of 2120020403 in words is "two billion, one hundred twenty million, twenty thousand, four hundred three".