1222422144444 has 72 divisors (see below), whose sum is σ = 3135901833792. Its totient is φ = 401435274240.

The previous prime is 1222422144403. The next prime is 1222422144479. The reversal of 1222422144444 is 4444412242221.

1222422144444 is a `hidden beast` number, since 1 + 222 + 422 + 1 + 4 + 4 + 4 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1222422144399 and 1222422144408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2051277 + ... + 2579259.

It is an arithmetic number, because the mean of its divisors is an integer number (43554192136).

Almost surely, 2^{1222422144444} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222422144444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1567950916896).

1222422144444 is an abundant number, since it is smaller than the sum of its proper divisors (1913479689348).

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

1222422144444 is a wasteful number, since it uses less digits than its factorization.

1222422144444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528947 (or 528942 counting only the distinct ones).

The product of its digits is 131072, while the sum is 36.

Adding to 1222422144444 its reverse (4444412242221), we get a palindrome (5666834386665).

The spelling of 1222422144444 in words is "one trillion, two hundred twenty-two billion, four hundred twenty-two million, one hundred forty-four thousand, four hundred forty-four".