7221351073 has 4 divisors (see below), whose sum is σ = 7250121648. Its totient is φ = 7192580500.

The previous prime is 7221351061. The next prime is 7221351097. The reversal of 7221351073 is 3701531227.

7221351073 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7221351073 is a prime.

It is a super-2 number, since 2×7221351073² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7221351023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14384911 + ... + 14385412.

It is an arithmetic number, because the mean of its divisors is an integer number (1812530412).

Almost surely, 2^7221351073 is an apocalyptic number.

It is an amenable number.

7221351073 is a deficient number, since it is larger than the sum of its proper divisors (28770575).

7221351073 is a wasteful number, since it uses less digits than its factorization.

7221351073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28770574.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 7221351073 is about 84978.5330127556. The cubic root of 7221351073 is about 1932.8856109860.

The spelling of 7221351073 in words is "seven billion, two hundred twenty-one million, three hundred fifty-one thousand, seventy-three".