1020120103 has 2 divisors, whose sum is σ = 1020120104. Its totient is φ = 1020120102.

The previous prime is 1020120083. The next prime is 1020120107. The reversal of 1020120103 is 3010210201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020120103 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1020120103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020120107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510060051 + 510060052.

It is an arithmetic number, because the mean of its divisors is an integer number (510060052).

Almost surely, 2^1020120103 is an apocalyptic number.

1020120103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020120103 is an equidigital number, since it uses as much as digits as its factorization.

1020120103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1020120103 is about 31939.3190753967. The cubic root of 1020120103 is about 1006.6622172929.

Adding to 1020120103 its reverse (3010210201), we get a palindrome (4030330304).

The spelling of 1020120103 in words is "one billion, twenty million, one hundred twenty thousand, one hundred three".