123010200111809 has 2 divisors, whose sum is σ = 123010200111810. Its totient is φ = 123010200111808.

The previous prime is 123010200111803. The next prime is 123010200111811. The reversal of 123010200111809 is 908111002010321.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104714862048784 + 18295338063025 = 10233028^2 + 4277305^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123010200111809 is a prime.

It is a super-2 number, since 2×123010200111809² (a number of 29 digits) contains 22 as substring.

Together with 123010200111811, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123010200111803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61505100055904 + 61505100055905.

It is an arithmetic number, because the mean of its divisors is an integer number (61505100055905).

Almost surely, 2^{123010200111809} is an apocalyptic number.

It is an amenable number.

123010200111809 is a deficient number, since it is larger than the sum of its proper divisors (1).

123010200111809 is an equidigital number, since it uses as much as digits as its factorization.

123010200111809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 29.

The spelling of 123010200111809 in words is "one hundred twenty-three trillion, ten billion, two hundred million, one hundred eleven thousand, eight hundred nine".