2201201001001 has 4 divisors (see below), whose sum is σ = 2201205343572. Its totient is φ = 2201196658432.

The previous prime is 2201201000989. The next prime is 2201201001007. The reversal of 2201201001001 is 1001001021022.

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 1054063608976 + 1147137392025 = 1026676^2 + 1071045^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2201201001001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2201201001007) 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, 1292356 + ... + 2464261.

It is an arithmetic number, because the mean of its divisors is an integer number (550301335893).

Almost surely, 2^{2201201001001} is an apocalyptic number.

It is an amenable number.

2201201001001 is a deficient number, since it is larger than the sum of its proper divisors (4342571).

2201201001001 is an equidigital number, since it uses as much as digits as its factorization.

2201201001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4342570.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 2201201001001 its reverse (1001001021022), we get a palindrome (3202202022023).

The spelling of 2201201001001 in words is "two trillion, two hundred one billion, two hundred one million, one thousand, one".