2201002221001 has 4 divisors (see below), whose sum is σ = 2201683860100.
Its totient is φ = 2200320581904.
The previous prime is 2201002220971. The next prime is 2201002221007. The reversal of 2201002221001 is 1001222001022.
It is a happy number.
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 659220581776 + 1541781639225 = 811924^2 + 1241685^2
It is a cyclic number.
It is not a de Polignac number, because 2201002221001 - 27 = 2201002220873 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (2201002221007) 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, 340814706 + ... + 340821163.
It is an arithmetic number, because the mean of its divisors is an integer number (550420965025).
Almost surely, 22201002221001 is an apocalyptic number.
It is an amenable number.
2201002221001 is a deficient number, since it is larger than the sum of its proper divisors (681639099).
2201002221001 is an equidigital number, since it uses as much as digits as its factorization.
2201002221001 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 681639098.
The product of its (nonzero) digits is 32, while the sum is 13.
Adding to 2201002221001 its reverse (1001222001022), we get a palindrome (3202224222023).
The spelling of 2201002221001 in words is "two trillion, two hundred one billion, two million, two hundred twenty-one thousand, one".