22254122130500 has 96 divisors (see below), whose sum is σ = 52347884735328. Its totient is φ = 8215934976000.

The previous prime is 22254122130469. The next prime is 22254122130521. The reversal of 22254122130500 is 503122145222.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 18506033874496 + 3748088256004 = 4301864^2 + 1935998^2 .

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, 55968392 + ... + 56364608.

It is an arithmetic number, because the mean of its divisors is an integer number (545290465993).

Almost surely, 2^{22254122130500} is an apocalyptic number.

22254122130500 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 22254122130500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26173942367664).

22254122130500 is an abundant number, since it is smaller than the sum of its proper divisors (30093762604828).

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

22254122130500 is a wasteful number, since it uses less digits than its factorization.

22254122130500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404890 (or 404878 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 22254122130500 its reverse (503122145222), we get a palindrome (22757244275722).

The spelling of 22254122130500 in words is "twenty-two trillion, two hundred fifty-four billion, one hundred twenty-two million, one hundred thirty thousand, five hundred".