1200201200001 has 12 divisors (see below), whose sum is σ = 1733633488912. Its totient is φ = 800129733336.

The previous prime is 1200201199993. The next prime is 1200201200021. The reversal of 1200201200001 is 1000021020021.

It is not a de Polignac number, because 1200201200001 - 2³ = 1200201199993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200201200021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2803170 + ... + 3202836.

Almost surely, 2^{1200201200001} is an apocalyptic number.

It is an amenable number.

1200201200001 is a deficient number, since it is larger than the sum of its proper divisors (533432288911).

1200201200001 is a wasteful number, since it uses less digits than its factorization.

1200201200001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733340 (or 733337 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1200201200001 its reverse (1000021020021), we get a palindrome (2200222220022).

The spelling of 1200201200001 in words is "one trillion, two hundred billion, two hundred one million, two hundred thousand, one".