22213254124644 has 192 divisors, whose sum is σ = 60553248537600. Its totient is φ = 6262938316800.

The previous prime is 22213254124619. The next prime is 22213254124681. The reversal of 22213254124644 is 44642145231222.

It is a junction number, because it is equal to n+sod(n) for n = 22213254124596 and 22213254124605.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1743714027 + ... + 1743726765.

It is an arithmetic number, because the mean of its divisors is an integer number (315381502800).

Almost surely, 2^{22213254124644} 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 22213254124644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30276624268800).

22213254124644 is an abundant number, since it is smaller than the sum of its proper divisors (38339994412956).

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

22213254124644 is a wasteful number, since it uses less digits than its factorization.

22213254124644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21594 (or 21592 counting only the distinct ones).

The product of its digits is 737280, while the sum is 42.

Adding to 22213254124644 its reverse (44642145231222), we get a palindrome (66855399355866).

The spelling of 22213254124644 in words is "twenty-two trillion, two hundred thirteen billion, two hundred fifty-four million, one hundred twenty-four thousand, six hundred forty-four".