22521118707036 has 288 divisors, whose sum is σ = 59655136020480. Its totient is φ = 7429023993600.

The previous prime is 22521118706993. The next prime is 22521118707077. The reversal of 22521118707036 is 63070781112522.

22521118707036 is a `hidden beast` number, since 2 + 2 + 521 + 11 + 87 + 0 + 7 + 0 + 36 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 22521118706982 and 22521118707000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 47016949045 + ... + 47016949523.

It is an arithmetic number, because the mean of its divisors is an integer number (207135888960).

Almost surely, 2^{22521118707036} 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 22521118707036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29827568010240).

22521118707036 is an abundant number, since it is smaller than the sum of its proper divisors (37134017313444).

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

22521118707036 is a wasteful number, since it uses less digits than its factorization.

22521118707036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1607 (or 1593 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

Adding to 22521118707036 its reverse (63070781112522), we get a palindrome (85591899819558).

The spelling of 22521118707036 in words is "twenty-two trillion, five hundred twenty-one billion, one hundred eighteen million, seven hundred seven thousand, thirty-six".