9778221330 has 32 divisors (see below), whose sum is σ = 24848187264. Its totient is φ = 2454141696.

The previous prime is 9778221329. The next prime is 9778221331. The reversal of 9778221330 is 331228779.

It is an interprime number because it is at equal distance from previous prime (9778221329) and next prime (9778221331).

It is a super-2 number, since 2×9778221330² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9778221331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9585982 + ... + 9587001.

It is an arithmetic number, because the mean of its divisors is an integer number (776505852).

Almost surely, 2^9778221330 is an apocalyptic number.

9778221330 is an abundant number, since it is smaller than the sum of its proper divisors (15069965934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9778221330 is a wasteful number, since it uses less digits than its factorization.

9778221330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19173010.

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 9778221330 is about 98884.8892905281. The cubic root of 9778221330 is about 2138.3885538033.

The spelling of 9778221330 in words is "nine billion, seven hundred seventy-eight million, two hundred twenty-one thousand, three hundred thirty".