7221333545657 has 24 divisors (see below), whose sum is σ = 9166571608320. Its totient is φ = 5625429704160.

The previous prime is 7221333545651. The next prime is 7221333545663. The reversal of 7221333545657 is 7565453331227.

7221333545657 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (7221333545651) and next prime (7221333545663).

It is not a de Polignac number, because 7221333545657 - 2⁶ = 7221333545593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7221333545599 and 7221333545608.

It is not an unprimeable number, because it can be changed into a prime (7221333545651) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 33944 + ... + 3800502.

It is an arithmetic number, because the mean of its divisors is an integer number (381940483680).

Almost surely, 2^{7221333545657} is an apocalyptic number.

7221333545657 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

It is an amenable number.

7221333545657 is a deficient number, since it is larger than the sum of its proper divisors (1945238062663).

7221333545657 is a wasteful number, since it uses less digits than its factorization.

7221333545657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3770141 (or 3770134 counting only the distinct ones).

The product of its digits is 15876000, while the sum is 53.

The spelling of 7221333545657 in words is "seven trillion, two hundred twenty-one billion, three hundred thirty-three million, five hundred forty-five thousand, six hundred fifty-seven".