9921337273 has 2 divisors, whose sum is σ = 9921337274. Its totient is φ = 9921337272.

The previous prime is 9921337271. The next prime is 9921337303. The reversal of 9921337273 is 3727331299.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9666232489 + 255104784 = 98317^2 + 15972^2 .

It is a cyclic number.

It is not a de Polignac number, because 9921337273 - 2¹ = 9921337271 is a prime.

Together with 9921337271, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (9921337271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4960668636 + 4960668637.

It is an arithmetic number, because the mean of its divisors is an integer number (4960668637).

Almost surely, 2^9921337273 is an apocalyptic number.

It is an amenable number.

9921337273 is a deficient number, since it is larger than the sum of its proper divisors (1).

9921337273 is an equidigital number, since it uses as much as digits as its factorization.

9921337273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 428652, while the sum is 46.

The square root of 9921337273 is about 99605.9098296883. The cubic root of 9921337273 is about 2148.7706888466.

The spelling of 9921337273 in words is "nine billion, nine hundred twenty-one million, three hundred thirty-seven thousand, two hundred seventy-three".