96981221 has 2 divisors, whose sum is σ = 96981222. Its totient is φ = 96981220.

The previous prime is 96981197. The next prime is 96981229. The reversal of 96981221 is 12218969.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91968100 + 5013121 = 9590^2 + 2239^2 .

It is a cyclic number.

It is not a de Polignac number, because 96981221 - 2¹⁰ = 96980197 is a prime.

It is a Chen prime.

It is equal to p_5597534 and since 96981221 and 5597534 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (96981229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48490610 + 48490611.

It is an arithmetic number, because the mean of its divisors is an integer number (48490611).

Almost surely, 2^96981221 is an apocalyptic number.

It is an amenable number.

96981221 is a deficient number, since it is larger than the sum of its proper divisors (1).

96981221 is an equidigital number, since it uses as much as digits as its factorization.

96981221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 38.

The square root of 96981221 is about 9847.9043963678. The cubic root of 96981221 is about 459.4404364864.

The spelling of 96981221 in words is "ninety-six million, nine hundred eighty-one thousand, two hundred twenty-one".