22221333402044 has 96 divisors (see below), whose sum is σ = 45575067073536. Its totient is φ = 9283300116480.

The previous prime is 22221333402011. The next prime is 22221333402061. The reversal of 22221333402044 is 44020433312222.

It is a self number, because there is not a number n which added to its sum of digits gives 22221333402044.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 141609452 + ... + 141766284.

It is an arithmetic number, because the mean of its divisors is an integer number (474740282016).

Almost surely, 2^{22221333402044} 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 22221333402044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22787533536768).

22221333402044 is an abundant number, since it is smaller than the sum of its proper divisors (23353733671492).

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

22221333402044 is a wasteful number, since it uses less digits than its factorization.

22221333402044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157515 (or 157513 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 22221333402044 its reverse (44020433312222), we get a palindrome (66241766714266).

The spelling of 22221333402044 in words is "twenty-two trillion, two hundred twenty-one billion, three hundred thirty-three million, four hundred two thousand, forty-four".