90833696221 has 2 divisors, whose sum is σ = 90833696222. Its totient is φ = 90833696220.

The previous prime is 90833696189. The next prime is 90833696269. The reversal of 90833696221 is 12269633809.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77726652025 + 13107044196 = 278795^2 + 114486^2 .

It is a cyclic number.

It is not a de Polignac number, because 90833696221 - 2⁵ = 90833696189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90833696021) 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, 45416848110 + 45416848111.

It is an arithmetic number, because the mean of its divisors is an integer number (45416848111).

Almost surely, 2^90833696221 is an apocalyptic number.

It is an amenable number.

90833696221 is a deficient number, since it is larger than the sum of its proper divisors (1).

90833696221 is an equidigital number, since it uses as much as digits as its factorization.

90833696221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 839808, while the sum is 49.

The spelling of 90833696221 in words is "ninety billion, eight hundred thirty-three million, six hundred ninety-six thousand, two hundred twenty-one".