200123230201009 has 2 divisors, whose sum is σ = 200123230201010. Its totient is φ = 200123230201008.

The previous prime is 200123230201003. The next prime is 200123230201033. The reversal of 200123230201009 is 900102032321002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154590803237025 + 45532426963984 = 12433455^2 + 6747772^2 .

It is a cyclic number.

It is not a de Polignac number, because 200123230201009 - 2³⁷ = 199985791247537 is a prime.

It is not a weakly prime, because it can be changed into another prime (200123230201003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100061615100504 + 100061615100505.

It is an arithmetic number, because the mean of its divisors is an integer number (100061615100505).

Almost surely, 2^{200123230201009} is an apocalyptic number.

It is an amenable number.

200123230201009 is a deficient number, since it is larger than the sum of its proper divisors (1).

200123230201009 is an equidigital number, since it uses as much as digits as its factorization.

200123230201009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The spelling of 200123230201009 in words is "two hundred trillion, one hundred twenty-three billion, two hundred thirty million, two hundred one thousand, nine".