123660101 has 2 divisors, whose sum is σ = 123660102. Its totient is φ = 123660100.

The previous prime is 123660073. The next prime is 123660109. The reversal of 123660101 is 101066321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105555076 + 18105025 = 10274^2 + 4255^2 .

It is a cyclic number.

It is not a de Polignac number, because 123660101 - 2¹⁸ = 123397957 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123660109) 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, 61830050 + 61830051.

It is an arithmetic number, because the mean of its divisors is an integer number (61830051).

Almost surely, 2^123660101 is an apocalyptic number.

It is an amenable number.

123660101 is a deficient number, since it is larger than the sum of its proper divisors (1).

123660101 is an equidigital number, since it uses as much as digits as its factorization.

123660101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 123660101 is about 11120.2563369735. The cubic root of 123660101 is about 498.2070463192.

The spelling of 123660101 in words is "one hundred twenty-three million, six hundred sixty thousand, one hundred one".