7221333707540 has 24 divisors (see below), whose sum is σ = 15314947332552. Its totient is φ = 2859934140800.

The previous prime is 7221333707519. The next prime is 7221333707573. The reversal of 7221333707540 is 457073331227.

It can be written as a sum of positive squares in 4 ways, for example, as 1367711538064 + 5853622169476 = 1169492^2 + 2419426^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7221333707491 and 7221333707500.

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 7 ways as a sum of consecutive naturals, for example, 1787456819 + ... + 1787460858.

It is an arithmetic number, because the mean of its divisors is an integer number (638122805523).

Almost surely, 2^{7221333707540} is an apocalyptic number.

It is an amenable number.

7221333707540 is an abundant number, since it is smaller than the sum of its proper divisors (8093613625012).

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

7221333707540 is a wasteful number, since it uses less digits than its factorization.

7221333707540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3574917787 (or 3574917785 counting only the distinct ones).

The product of its (nonzero) digits is 740880, while the sum is 44.

The spelling of 7221333707540 in words is "seven trillion, two hundred twenty-one billion, three hundred thirty-three million, seven hundred seven thousand, five hundred forty".