1001001201 has 4 divisors (see below), whose sum is σ = 1334668272. Its totient is φ = 667334132.

The previous prime is 1001001151. The next prime is 1001001217. The reversal of 1001001201 is 1021001001.

1001001201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1021001001 = 3 ⋅340333667.

It is a cyclic number.

It is not a de Polignac number, because 1001001201 - 2⁶ = 1001001137 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1001001201.

It is not an unprimeable number, because it can be changed into a prime (1001001241) 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, 166833531 + ... + 166833536.

It is an arithmetic number, because the mean of its divisors is an integer number (333667068).

Almost surely, 2^1001001201 is an apocalyptic number.

It is an amenable number.

1001001201 is a deficient number, since it is larger than the sum of its proper divisors (333667071).

1001001201 is an equidigital number, since it uses as much as digits as its factorization.

1001001201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333667070.

The product of its (nonzero) digits is 2, while the sum is 6.

The square root of 1001001201 is about 31638.6030190968. The cubic root of 1001001201 is about 1000.3336223504. Note that the first 3 decimals are identical.

Adding to 1001001201 its reverse (1021001001), we get a palindrome (2022002202).

The spelling of 1001001201 in words is "one billion, one million, one thousand, two hundred one".