72202201 has 2 divisors, whose sum is σ = 72202202. Its totient is φ = 72202200.

The previous prime is 72202187. The next prime is 72202211. The reversal of 72202201 is 10220227.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69705801 + 2496400 = 8349^2 + 1580^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72202201 is a prime.

It is not a weakly prime, because it can be changed into another prime (72202211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36101100 + 36101101.

It is an arithmetic number, because the mean of its divisors is an integer number (36101101).

Almost surely, 2^72202201 is an apocalyptic number.

It is an amenable number.

72202201 is a deficient number, since it is larger than the sum of its proper divisors (1).

72202201 is an equidigital number, since it uses as much as digits as its factorization.

72202201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 72202201 is about 8497.1878289232. The cubic root of 72202201 is about 416.4058404591.

Adding to 72202201 its reverse (10220227), we get a palindrome (82422428).

The spelling of 72202201 in words is "seventy-two million, two hundred two thousand, two hundred one".