402221122213 has 2 divisors, whose sum is σ = 402221122214. Its totient is φ = 402221122212.

The previous prime is 402221122183. The next prime is 402221122223. The reversal of 402221122213 is 312221122204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 270334483969 + 131886638244 = 519937^2 + 363162^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402221122213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402221122223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201110561106 + 201110561107.

It is an arithmetic number, because the mean of its divisors is an integer number (201110561107).

Almost surely, 2^402221122213 is an apocalyptic number.

It is an amenable number.

402221122213 is a deficient number, since it is larger than the sum of its proper divisors (1).

402221122213 is an equidigital number, since it uses as much as digits as its factorization.

402221122213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 402221122213 its reverse (312221122204), we get a palindrome (714442244417).

Subtracting from 402221122213 its reverse (312221122204), we obtain a palindrome (90000000009).

The spelling of 402221122213 in words is "four hundred two billion, two hundred twenty-one million, one hundred twenty-two thousand, two hundred thirteen".