72320002220131 has 2 divisors, whose sum is σ = 72320002220132. Its totient is φ = 72320002220130.

The previous prime is 72320002220071. The next prime is 72320002220161. The reversal of 72320002220131 is 13102220002327.

It is a strong prime.

It is an emirp because it is prime and its reverse (13102220002327) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72320002220131 - 2³¹ = 72317854736483 is a prime.

It is a super-2 number, since 2×72320002220131² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72320002220096 and 72320002220105.

It is not a weakly prime, because it can be changed into another prime (72320002220161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36160001110065 + 36160001110066.

It is an arithmetic number, because the mean of its divisors is an integer number (36160001110066).

Almost surely, 2^{72320002220131} is an apocalyptic number.

72320002220131 is a deficient number, since it is larger than the sum of its proper divisors (1).

72320002220131 is an equidigital number, since it uses as much as digits as its factorization.

72320002220131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 25.

Adding to 72320002220131 its reverse (13102220002327), we get a palindrome (85422222222458).

The spelling of 72320002220131 in words is "seventy-two trillion, three hundred twenty billion, two million, two hundred twenty thousand, one hundred thirty-one".