2221022178 has 24 divisors (see below), whose sum is σ = 4841036928. Its totient is φ = 735906552.

The previous prime is 2221022147. The next prime is 2221022179. The reversal of 2221022178 is 8712201222.

It is not an unprimeable number, because it can be changed into a prime (2221022179) 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 in 11 ways as a sum of consecutive naturals, for example, 366426 + ... + 372437.

It is an arithmetic number, because the mean of its divisors is an integer number (201709872).

Almost surely, 2^2221022178 is an apocalyptic number.

2221022178 is an abundant number, since it is smaller than the sum of its proper divisors (2620014750).

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

2221022178 is a wasteful number, since it uses less digits than its factorization.

2221022178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739038 (or 739035 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 2221022178 is about 47127.7219691340. The cubic root of 2221022178 is about 1304.7209373786.

The spelling of 2221022178 in words is "two billion, two hundred twenty-one million, twenty-two thousand, one hundred seventy-eight".