2001012233201 has 4 divisors (see below), whose sum is σ = 2118718835172. Its totient is φ = 1883305631232.

The previous prime is 2001012233189. The next prime is 2001012233203. The reversal of 2001012233201 is 1023322101002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1126368303025 + 874643930176 = 1061305^2 + 935224^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001012233201 - 2²⁶ = 2000945124337 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 117706601953 = 2001012233201 / (2 + 0 + 0 + 1 + 0 + 1 + 2 + 2 + 3 + 3 + 2 + 0 + 1).

It is a self number, because there is not a number n which added to its sum of digits gives 2001012233201.

It is not an unprimeable number, because it can be changed into a prime (2001012233203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58853300960 + ... + 58853300993.

It is an arithmetic number, because the mean of its divisors is an integer number (529679708793).

Almost surely, 2^{2001012233201} is an apocalyptic number.

It is an amenable number.

2001012233201 is a deficient number, since it is larger than the sum of its proper divisors (117706601971).

2001012233201 is a wasteful number, since it uses less digits than its factorization.

2001012233201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117706601970.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 2001012233201 its reverse (1023322101002), we get a palindrome (3024334334203).

The spelling of 2001012233201 in words is "two trillion, one billion, twelve million, two hundred thirty-three thousand, two hundred one".