1200201013123 has 24 divisors (see below), whose sum is σ = 1398998515200. Its totient is φ = 1026648656208.

The previous prime is 1200201013051. The next prime is 1200201013129. The reversal of 1200201013123 is 3213101020021.

It is not a de Polignac number, because 1200201013123 - 2²⁹ = 1199664142211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200201013097 and 1200201013106.

It is not an unprimeable number, because it can be changed into a prime (1200201013129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49218748 + ... + 49243126.

It is an arithmetic number, because the mean of its divisors is an integer number (58291604800).

Almost surely, 2^{1200201013123} is an apocalyptic number.

1200201013123 is a deficient number, since it is larger than the sum of its proper divisors (198797502077).

1200201013123 is a wasteful number, since it uses less digits than its factorization.

1200201013123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26399 (or 26392 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1200201013123 its reverse (3213101020021), we get a palindrome (4413302033144).

The spelling of 1200201013123 in words is "one trillion, two hundred billion, two hundred one million, thirteen thousand, one hundred twenty-three".