272122321 has 2 divisors, whose sum is σ = 272122322. Its totient is φ = 272122320.

The previous prime is 272122271. The next prime is 272122369. The reversal of 272122321 is 123221272.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136632721 + 135489600 = 11689^2 + 11640^2 .

It is a cyclic number.

It is not a de Polignac number, because 272122321 - 2¹¹ = 272120273 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 272122292 and 272122301.

It is not a weakly prime, because it can be changed into another prime (272122121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136061160 + 136061161.

It is an arithmetic number, because the mean of its divisors is an integer number (136061161).

Almost surely, 2^272122321 is an apocalyptic number.

It is an amenable number.

272122321 is a deficient number, since it is larger than the sum of its proper divisors (1).

272122321 is an equidigital number, since it uses as much as digits as its factorization.

272122321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 672, while the sum is 22.

The square root of 272122321 is about 16496.1304856624. The cubic root of 272122321 is about 648.0194713260.

Adding to 272122321 its reverse (123221272), we get a palindrome (395343593).

The spelling of 272122321 in words is "two hundred seventy-two million, one hundred twenty-two thousand, three hundred twenty-one".