402122221073 has 2 divisors, whose sum is σ = 402122221074. Its totient is φ = 402122221072.

The previous prime is 402122221057. The next prime is 402122221103. The reversal of 402122221073 is 370122221204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 366481312129 + 35640908944 = 605377^2 + 188788^2 .

It is a cyclic number.

It is not a de Polignac number, because 402122221073 - 2⁴ = 402122221057 is a prime.

It is not a weakly prime, because it can be changed into another prime (402122221043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201061110536 + 201061110537.

It is an arithmetic number, because the mean of its divisors is an integer number (201061110537).

Almost surely, 2^402122221073 is an apocalyptic number.

It is an amenable number.

402122221073 is a deficient number, since it is larger than the sum of its proper divisors (1).

402122221073 is an equidigital number, since it uses as much as digits as its factorization.

402122221073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 26.

Adding to 402122221073 its reverse (370122221204), we get a palindrome (772244442277).

The spelling of 402122221073 in words is "four hundred two billion, one hundred twenty-two million, two hundred twenty-one thousand, seventy-three".