1002221121241 has 2 divisors, whose sum is σ = 1002221121242. Its totient is φ = 1002221121240.

The previous prime is 1002221121163. The next prime is 1002221121263. The reversal of 1002221121241 is 1421211222001.

1002221121241 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 572298302016 + 429922819225 = 756504^2 + 655685^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002221121241 - 2²¹ = 1002219024089 is a prime.

It is not a weakly prime, because it can be changed into another prime (1002221122241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501110560620 + 501110560621.

It is an arithmetic number, because the mean of its divisors is an integer number (501110560621).

Almost surely, 2^{1002221121241} is an apocalyptic number.

It is an amenable number.

1002221121241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002221121241 is an equidigital number, since it uses as much as digits as its factorization.

1002221121241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1002221121241 its reverse (1421211222001), we get a palindrome (2423432343242).

The spelling of 1002221121241 in words is "one trillion, two billion, two hundred twenty-one million, one hundred twenty-one thousand, two hundred forty-one".