1002220201001 has 2 divisors, whose sum is σ = 1002220201002. Its totient is φ = 1002220201000.

The previous prime is 1002220200997. The next prime is 1002220201051. The reversal of 1002220201001 is 1001020222001.

It is a happy number.

1002220201001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 639456115600 + 362764085401 = 799660^2 + 602299^2 .

It is an emirp because it is prime and its reverse (1001020222001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1002220201001 - 2² = 1002220200997 is a prime.

It is not a weakly prime, because it can be changed into another prime (1002220201051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501110100500 + 501110100501.

It is an arithmetic number, because the mean of its divisors is an integer number (501110100501).

Almost surely, 2^{1002220201001} is an apocalyptic number.

It is an amenable number.

1002220201001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002220201001 is an equidigital number, since it uses as much as digits as its factorization.

1002220201001 is an evil number, because the sum of its binary digits is even.

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

Adding to 1002220201001 its reverse (1001020222001), we get a palindrome (2003240423002).

The spelling of 1002220201001 in words is "one trillion, two billion, two hundred twenty million, two hundred one thousand, one".