72200122 has 16 divisors (see below), whose sum is σ = 114896232. Its totient is φ = 33909760.

The previous prime is 72200119. The next prime is 72200137. The reversal of 72200122 is 22100227.

It can be written as a sum of positive squares in 4 ways, for example, as 72097081 + 103041 = 8491^2 + 321^2 .

It is a junction number, because it is equal to n+sod(n) for n = 72200096 and 72200105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18372 + ... + 21952.

Almost surely, 2^72200122 is an apocalyptic number.

72200122 is a deficient number, since it is larger than the sum of its proper divisors (42696110).

72200122 is a wasteful number, since it uses less digits than its factorization.

72200122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4193.

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

The square root of 72200122 is about 8497.0654934513. The cubic root of 72200122 is about 416.4018437386.

Adding to 72200122 its reverse (22100227), we get a palindrome (94300349).

The spelling of 72200122 in words is "seventy-two million, two hundred thousand, one hundred twenty-two".