1201201210001 has 8 divisors (see below), whose sum is σ = 1308136150440. Its totient is φ = 1096342676352.

The previous prime is 1201201209973. The next prime is 1201201210007. The reversal of 1201201210001 is 1000121021021.

It can be written as a sum of positive squares in 4 ways, for example, as 13807425025 + 1187393784976 = 117505^2 + 1089676^2 .

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 1201201210001 - 2³⁸ = 926323303057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201201210007) 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, 519100490 + ... + 519102803.

It is an arithmetic number, because the mean of its divisors is an integer number (163517018805).

Almost surely, 2^{1201201210001} is an apocalyptic number.

It is an amenable number.

1201201210001 is a deficient number, since it is larger than the sum of its proper divisors (106934940439).

1201201210001 is a wasteful number, since it uses less digits than its factorization.

1201201210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038203395.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1201201210001 its reverse (1000121021021), we get a palindrome (2201322231022).

The spelling of 1201201210001 in words is "one trillion, two hundred one billion, two hundred one million, two hundred ten thousand, one".