22222020544 has 56 divisors (see below), whose sum is σ = 44890913520. Its totient is φ = 10911320064.

The previous prime is 22222020533. The next prime is 22222020581. The reversal of 22222020544 is 44502022222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4502302 + ... + 4507234.

Almost surely, 2^22222020544 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 22222020544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22445456760).

22222020544 is an abundant number, since it is smaller than the sum of its proper divisors (22668892976).

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

22222020544 is a wasteful number, since it uses less digits than its factorization.

22222020544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6197 (or 6187 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 25.

Adding to 22222020544 its reverse (44502022222), we get a palindrome (66724042766).

The spelling of 22222020544 in words is "twenty-two billion, two hundred twenty-two million, twenty thousand, five hundred forty-four".