22144425721220 has 144 divisors (see below), whose sum is σ = 52774231394304. Its totient is φ = 7794251942400.

The previous prime is 22144425721213. The next prime is 22144425721331. The reversal of 22144425721220 is 2212752444122.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11722259 + ... + 13479621.

It is an arithmetic number, because the mean of its divisors is an integer number (366487718016).

Almost surely, 2^{22144425721220} is an apocalyptic number.

22144425721220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22144425721220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26387115697152).

22144425721220 is an abundant number, since it is smaller than the sum of its proper divisors (30629805673084).

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

22144425721220 is a wasteful number, since it uses less digits than its factorization.

22144425721220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1757562 (or 1757549 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 38.

The spelling of 22144425721220 in words is "twenty-two trillion, one hundred forty-four billion, four hundred twenty-five million, seven hundred twenty-one thousand, two hundred twenty".