83141221 has 2 divisors, whose sum is σ = 83141222. Its totient is φ = 83141220.

The previous prime is 83141209. The next prime is 83141263. The reversal of 83141221 is 12214138.

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., 51624225 + 31516996 = 7185^2 + 5614^2 .

It is a cyclic number.

It is not a de Polignac number, because 83141221 - 2⁵ = 83141189 is a prime.

It is equal to p_4842004 and since 83141221 and 4842004 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 83141192 and 83141201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83142221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41570610 + 41570611.

It is an arithmetic number, because the mean of its divisors is an integer number (41570611).

Almost surely, 2^83141221 is an apocalyptic number.

It is an amenable number.

83141221 is a deficient number, since it is larger than the sum of its proper divisors (1).

83141221 is an equidigital number, since it uses as much as digits as its factorization.

83141221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 384, while the sum is 22.

The square root of 83141221 is about 9118.1807944348. The cubic root of 83141221 is about 436.4543229435.

Adding to 83141221 its reverse (12214138), we get a palindrome (95355359).

The spelling of 83141221 in words is "eighty-three million, one hundred forty-one thousand, two hundred twenty-one".