2221170144 has 48 divisors (see below), whose sum is σ = 5835065040. Its totient is φ = 739819520.

The previous prime is 2221170143. The next prime is 2221170179. The reversal of 2221170144 is 4410711222.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221170143) 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 7 ways as a sum of consecutive naturals, for example, 127054 + ... + 143474.

It is an arithmetic number, because the mean of its divisors is an integer number (121563855).

Almost surely, 2^2221170144 is an apocalyptic number.

2221170144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2221170144 is an abundant number, since it is smaller than the sum of its proper divisors (3613894896).

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

2221170144 is a wasteful number, since it uses less digits than its factorization.

2221170144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17843 (or 17835 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 2221170144 is about 47129.2917833485. The cubic root of 2221170144 is about 1304.7499105323.

Adding to 2221170144 its reverse (4410711222), we get a palindrome (6631881366).

The spelling of 2221170144 in words is "two billion, two hundred twenty-one million, one hundred seventy thousand, one hundred forty-four".