103406566121 has 2 divisors, whose sum is σ = 103406566122. Its totient is φ = 103406566120.

The previous prime is 103406566103. The next prime is 103406566141. The reversal of 103406566121 is 121665604301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63723934096 + 39682632025 = 252436^2 + 199205^2 .

It is a cyclic number.

It is not a de Polignac number, because 103406566121 - 2¹⁴ = 103406549737 is a prime.

It is not a weakly prime, because it can be changed into another prime (103406566141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51703283060 + 51703283061.

It is an arithmetic number, because the mean of its divisors is an integer number (51703283061).

Almost surely, 2^103406566121 is an apocalyptic number.

It is an amenable number.

103406566121 is a deficient number, since it is larger than the sum of its proper divisors (1).

103406566121 is an equidigital number, since it uses as much as digits as its factorization.

103406566121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 103406566121 in words is "one hundred three billion, four hundred six million, five hundred sixty-six thousand, one hundred twenty-one".