1201011200001 has 24 divisors (see below), whose sum is σ = 1743862367520. Its totient is φ = 796499548416.

The previous prime is 1201011199939. The next prime is 1201011200047. The reversal of 1201011200001 is 1000021101021.

It is a happy number.

It is not a de Polignac number, because 1201011200001 - 2⁷ = 1201011199873 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (1201011200201) 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, 880050 + ... + 1782276.

It is an arithmetic number, because the mean of its divisors is an integer number (72660931980).

Almost surely, 2^{1201011200001} is an apocalyptic number.

It is an amenable number.

1201011200001 is a deficient number, since it is larger than the sum of its proper divisors (542851167519).

1201011200001 is a wasteful number, since it uses less digits than its factorization.

1201011200001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903005 (or 903002 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1201011200001 its reverse (1000021101021), we get a palindrome (2201032301022).

The spelling of 1201011200001 in words is "one trillion, two hundred one billion, eleven million, two hundred thousand, one".