402111034220321 has 2 divisors, whose sum is σ = 402111034220322. Its totient is φ = 402111034220320.

The previous prime is 402111034220309. The next prime is 402111034220353. The reversal of 402111034220321 is 123022430111204.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 388131922732096 + 13979111488225 = 19701064^2 + 3738865^2 .

It is a cyclic number.

It is not a de Polignac number, because 402111034220321 - 2¹⁴ = 402111034203937 is a prime.

It is not a weakly prime, because it can be changed into another prime (402111034220221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201055517110160 + 201055517110161.

It is an arithmetic number, because the mean of its divisors is an integer number (201055517110161).

Almost surely, 2^{402111034220321} is an apocalyptic number.

It is an amenable number.

402111034220321 is a deficient number, since it is larger than the sum of its proper divisors (1).

402111034220321 is an equidigital number, since it uses as much as digits as its factorization.

402111034220321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 402111034220321 its reverse (123022430111204), we get a palindrome (525133464331525).

The spelling of 402111034220321 in words is "four hundred two trillion, one hundred eleven billion, thirty-four million, two hundred twenty thousand, three hundred twenty-one".