20101201001 has 8 divisors (see below), whose sum is σ = 23025859584. Its totient is φ = 17189807040.

The previous prime is 20101200943. The next prime is 20101201007. The reversal of 20101201001 is 10010210102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20101201001 - 2²² = 20097006697 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20101201001.

It is not an unprimeable number, because it can be changed into a prime (20101201007) 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, 3312905 + ... + 3318966.

It is an arithmetic number, because the mean of its divisors is an integer number (2878232448).

Almost surely, 2^20101201001 is an apocalyptic number.

It is an amenable number.

20101201001 is a deficient number, since it is larger than the sum of its proper divisors (2924658583).

20101201001 is an equidigital number, since it uses as much as digits as its factorization.

20101201001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6632311.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 20101201001 its reverse (10010210102), we get a palindrome (30111411103).

The spelling of 20101201001 in words is "twenty billion, one hundred one million, two hundred one thousand, one".