125123101 has 2 divisors, whose sum is σ = 125123102. Its totient is φ = 125123100.

The previous prime is 125123093. The next prime is 125123107. The reversal of 125123101 is 101321521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97022500 + 28100601 = 9850^2 + 5301^2 .

It is a cyclic number.

It is not a de Polignac number, because 125123101 - 2³ = 125123093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125123107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62561550 + 62561551.

It is an arithmetic number, because the mean of its divisors is an integer number (62561551).

Almost surely, 2^125123101 is an apocalyptic number.

It is an amenable number.

125123101 is a deficient number, since it is larger than the sum of its proper divisors (1).

125123101 is an equidigital number, since it uses as much as digits as its factorization.

125123101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 125123101 is about 11185.8437768458. The cubic root of 125123101 is about 500.1640808157.

Adding to 125123101 its reverse (101321521), we get a palindrome (226444622).

The spelling of 125123101 in words is "one hundred twenty-five million, one hundred twenty-three thousand, one hundred one".