22144642220 has 12 divisors (see below), whose sum is σ = 46503748704. Its totient is φ = 8857856880.

The previous prime is 22144642217. The next prime is 22144642229. The reversal of 22144642220 is 2224644122.

It is not an unprimeable number, because it can be changed into a prime (22144642229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553616036 + ... + 553616075.

It is an arithmetic number, because the mean of its divisors is an integer number (3875312392).

Almost surely, 2^22144642220 is an apocalyptic number.

22144642220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22144642220 is an abundant number, since it is smaller than the sum of its proper divisors (24359106484).

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

22144642220 is a wasteful number, since it uses less digits than its factorization.

22144642220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107232120 (or 1107232118 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 29.

The spelling of 22144642220 in words is "twenty-two billion, one hundred forty-four million, six hundred forty-two thousand, two hundred twenty".