66201122 has 16 divisors (see below), whose sum is σ = 107126712. Its totient is φ = 30501120.

The previous prime is 66201097. The next prime is 66201143. The reversal of 66201122 is 22110266.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 61795321 + 4405801 = 7861^2 + 2099^2 .

It is a junction number, because it is equal to n+sod(n) for n = 66201094 and 66201103.

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, 15722 + ... + 19482.

Almost surely, 2^66201122 is an apocalyptic number.

66201122 is a deficient number, since it is larger than the sum of its proper divisors (40925590).

66201122 is a wasteful number, since it uses less digits than its factorization.

66201122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4453.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 66201122 is about 8136.4071923669. The cubic root of 66201122 is about 404.5340818967.

Adding to 66201122 its reverse (22110266), we get a palindrome (88311388).

The spelling of 66201122 in words is "sixty-six million, two hundred one thousand, one hundred twenty-two".