7221030225500 has 288 divisors, whose sum is σ = 19535193595008. Its totient is φ = 2283181056000.

The previous prime is 7221030225439. The next prime is 7221030225587. The reversal of 7221030225500 is 55220301227.

It is a super-3 number, since 3×7221030225500³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 698556332 + ... + 698566668.

It is an arithmetic number, because the mean of its divisors is an integer number (67830533316).

Almost surely, 2^{7221030225500} is an apocalyptic number.

7221030225500 is a gapful number since it is divisible by the number (70) 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 7221030225500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9767596797504).

7221030225500 is an abundant number, since it is smaller than the sum of its proper divisors (12314163369508).

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

7221030225500 is a wasteful number, since it uses less digits than its factorization.

7221030225500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11570 (or 11545 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

Adding to 7221030225500 its reverse (55220301227), we get a palindrome (7276250526727).

The spelling of 7221030225500 in words is "seven trillion, two hundred twenty-one billion, thirty million, two hundred twenty-five thousand, five hundred".