103120020121 has 8 divisors (see below), whose sum is σ = 105235998984. Its totient is φ = 101010349440.

The previous prime is 103120020103. The next prime is 103120020137. The reversal of 103120020121 is 121020021301.

It can be written as a sum of positive squares in 4 ways, for example, as 440790025 + 102679230096 = 20995^2 + 320436^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 103120020121 - 2¹⁷ = 103119889049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103120020821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1544010 + ... + 1609411.

It is an arithmetic number, because the mean of its divisors is an integer number (13154499873).

Almost surely, 2^103120020121 is an apocalyptic number.

It is an amenable number.

103120020121 is a deficient number, since it is larger than the sum of its proper divisors (2115978863).

103120020121 is an equidigital number, since it uses as much as digits as its factorization.

103120020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3154091.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 103120020121 its reverse (121020021301), we get a palindrome (224140041422).

The spelling of 103120020121 in words is "one hundred three billion, one hundred twenty million, twenty thousand, one hundred twenty-one".