1200209120123 has 8 divisors (see below), whose sum is σ = 1293131046816. Its totient is φ = 1107372643200.

The previous prime is 1200209120101. The next prime is 1200209120137. The reversal of 1200209120123 is 3210219020021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1200209120123 - 2²⁶ = 1200142011259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200209129123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21333263 + ... + 21389448.

It is an arithmetic number, because the mean of its divisors is an integer number (161641380852).

Almost surely, 2^{1200209120123} is an apocalyptic number.

1200209120123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1200209120123 is a deficient number, since it is larger than the sum of its proper divisors (92921926693).

1200209120123 is a wasteful number, since it uses less digits than its factorization.

1200209120123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42724885.

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 1200209120123 in words is "one trillion, two hundred billion, two hundred nine million, one hundred twenty thousand, one hundred twenty-three".