22102125500 has 192 divisors, whose sum is σ = 59668697088. Its totient is φ = 6964588800.

The previous prime is 22102125499. The next prime is 22102125509. The reversal of 22102125500 is 552120122.

It is a happy number.

It is a super-4 number, since 4×22102125500⁴ (a number of 42 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22102125509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11965577 + ... + 11967423.

It is an arithmetic number, because the mean of its divisors is an integer number (310774464).

Almost surely, 2^22102125500 is an apocalyptic number.

22102125500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22102125500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29834348544).

22102125500 is an abundant number, since it is smaller than the sum of its proper divisors (37566571588).

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

22102125500 is a wasteful number, since it uses less digits than its factorization.

22102125500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2149 (or 2137 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

Adding to 22102125500 its reverse (552120122), we get a palindrome (22654245622).

The spelling of 22102125500 in words is "twenty-two billion, one hundred two million, one hundred twenty-five thousand, five hundred".