123103201209 has 16 divisors (see below), whose sum is σ = 177490476288. Its totient is φ = 75597792512.

The previous prime is 123103201201. The next prime is 123103201213. The reversal of 123103201209 is 902102301321.

It is a cyclic number.

It is not a de Polignac number, because 123103201209 - 2³ = 123103201201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123103201201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25676202 + ... + 25680995.

It is an arithmetic number, because the mean of its divisors is an integer number (11093154768).

Almost surely, 2^123103201209 is an apocalyptic number.

It is an amenable number.

123103201209 is a deficient number, since it is larger than the sum of its proper divisors (54387275079).

123103201209 is a wasteful number, since it uses less digits than its factorization.

123103201209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51357264.

The product of its (nonzero) digits is 648, while the sum is 24.

The spelling of 123103201209 in words is "one hundred twenty-three billion, one hundred three million, two hundred one thousand, two hundred nine".