1002220420193 has 2 divisors, whose sum is σ = 1002220420194. Its totient is φ = 1002220420192.

The previous prime is 1002220420189. The next prime is 1002220420231. The reversal of 1002220420193 is 3910240222001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 941767379809 + 60453040384 = 970447^2 + 245872^2 .

It is an emirp because it is prime and its reverse (3910240222001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1002220420193 - 2² = 1002220420189 is a prime.

It is not a weakly prime, because it can be changed into another prime (1002220420183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501110210096 + 501110210097.

It is an arithmetic number, because the mean of its divisors is an integer number (501110210097).

Almost surely, 2^{1002220420193} is an apocalyptic number.

It is an amenable number.

1002220420193 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002220420193 is an equidigital number, since it uses as much as digits as its factorization.

1002220420193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 1002220420193 its reverse (3910240222001), we get a palindrome (4912460642194).

The spelling of 1002220420193 in words is "one trillion, two billion, two hundred twenty million, four hundred twenty thousand, one hundred ninety-three".