7221300000 has 144 divisors (see below), whose sum is σ = 23694358464. Its totient is φ = 1925600000.

The previous prime is 7221299983. The next prime is 7221300017. The reversal of 7221300000 is 31227.

It is an interprime number because it is at equal distance from previous prime (7221299983) and next prime (7221300017).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 287965 + ... + 312035.

It is an arithmetic number, because the mean of its divisors is an integer number (164544156).

Almost surely, 2^7221300000 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 7221300000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11847179232).

7221300000 is an abundant number, since it is smaller than the sum of its proper divisors (16473058464).

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

7221300000 is an equidigital number, since it uses as much as digits as its factorization.

7221300000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24109 (or 24081 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 7221300000 is about 84978.2325069191. The cubic root of 7221300000 is about 1932.8810541979.

Adding to 7221300000 its reverse (31227), we get a palindrome (7221331227).

The spelling of 7221300000 in words is "seven billion, two hundred twenty-one million, three hundred thousand".