103420420000121 has 6 divisors (see below), whose sum is σ = 120305386530810. Its totient is φ = 88646074285776.

The previous prime is 103420420000097. The next prime is 103420420000201. The reversal of 103420420000121 is 121000024024301.

It can be written as a sum of positive squares in only one way, i.e., 56923841054521 + 46496578945600 = 7544789^2 + 6818840^2 .

It is not a de Polignac number, because 103420420000121 - 2¹⁸ = 103420419737977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103420420000093 and 103420420000102.

It is not an unprimeable number, because it can be changed into a prime (103420420000021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1055310408116 + ... + 1055310408213.

It is an arithmetic number, because the mean of its divisors is an integer number (20050897755135).

Almost surely, 2^{103420420000121} is an apocalyptic number.

It is an amenable number.

103420420000121 is a deficient number, since it is larger than the sum of its proper divisors (16884966530689).

103420420000121 is an equidigital number, since it uses as much as digits as its factorization.

103420420000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2110620816343 (or 2110620816336 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 103420420000121 its reverse (121000024024301), we get a palindrome (224420444024422).

The spelling of 103420420000121 in words is "one hundred three trillion, four hundred twenty billion, four hundred twenty million, one hundred twenty-one", and thus it is an aban number.