9881222887 has 2 divisors, whose sum is σ = 9881222888. Its totient is φ = 9881222886.

The previous prime is 9881222861. The next prime is 9881222893. The reversal of 9881222887 is 7882221889.

It is a strong prime.

It is an emirp because it is prime and its reverse (7882221889) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9881222887 - 2⁷ = 9881222759 is a prime.

It is a super-2 number, since 2×9881222887² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9881222807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4940611443 + 4940611444.

It is an arithmetic number, because the mean of its divisors is an integer number (4940611444).

Almost surely, 2^9881222887 is an apocalyptic number.

9881222887 is a deficient number, since it is larger than the sum of its proper divisors (1).

9881222887 is an equidigital number, since it uses as much as digits as its factorization.

9881222887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2064384, while the sum is 55.

The square root of 9881222887 is about 99404.3403831040. The cubic root of 9881222887 is about 2145.8707756785.

The spelling of 9881222887 in words is "nine billion, eight hundred eighty-one million, two hundred twenty-two thousand, eight hundred eighty-seven".