1002201220001 has 4 divisors (see below), whose sum is σ = 1045775186112. Its totient is φ = 958627253892.

The previous prime is 1002201219967. The next prime is 1002201220039. The reversal of 1002201220001 is 1000221022001.

It is a happy number.

1002201220001 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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002201220001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1002201220051) 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, 21786983021 + ... + 21786983066.

It is an arithmetic number, because the mean of its divisors is an integer number (261443796528).

Almost surely, 2^{1002201220001} is an apocalyptic number.

It is an amenable number.

1002201220001 is a deficient number, since it is larger than the sum of its proper divisors (43573966111).

1002201220001 is an equidigital number, since it uses as much as digits as its factorization.

1002201220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43573966110.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1002201220001 its reverse (1000221022001), we get a palindrome (2002422242002).

The spelling of 1002201220001 in words is "one trillion, two billion, two hundred one million, two hundred twenty thousand, one".