890233221601 has 2 divisors, whose sum is σ = 890233221602. Its totient is φ = 890233221600.

The previous prime is 890233221541. The next prime is 890233221643. The reversal of 890233221601 is 106122332098.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 764708274576 + 125524947025 = 874476^2 + 354295^2 .

It is a cyclic number.

It is not a de Polignac number, because 890233221601 - 2⁷ = 890233221473 is a prime.

It is not a weakly prime, because it can be changed into another prime (890233228601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445116610800 + 445116610801.

It is an arithmetic number, because the mean of its divisors is an integer number (445116610801).

Almost surely, 2^890233221601 is an apocalyptic number.

It is an amenable number.

890233221601 is a deficient number, since it is larger than the sum of its proper divisors (1).

890233221601 is an equidigital number, since it uses as much as digits as its factorization.

890233221601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 37.

Adding to 890233221601 its reverse (106122332098), we get a palindrome (996355553699).

The spelling of 890233221601 in words is "eight hundred ninety billion, two hundred thirty-three million, two hundred twenty-one thousand, six hundred one".