66223122 has 32 divisors (see below), whose sum is σ = 151632000. Its totient is φ = 18887808.

The previous prime is 66223121. The next prime is 66223123. The reversal of 66223122 is 22132266.

It is an interprime number because it is at equal distance from previous prime (66223121) and next prime (66223123).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 66223092 and 66223101.

It is not an unprimeable number, because it can be changed into a prime (66223121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33004 + ... + 34952.

It is an arithmetic number, because the mean of its divisors is an integer number (4738500).

Almost surely, 2^66223122 is an apocalyptic number.

66223122 is an abundant number, since it is smaller than the sum of its proper divisors (85408878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66223122 is a wasteful number, since it uses less digits than its factorization.

66223122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2770.

The product of its digits is 1728, while the sum is 24.

The square root of 66223122 is about 8137.7590281354. The cubic root of 66223122 is about 404.5788886103.

Adding to 66223122 its reverse (22132266), we get a palindrome (88355388).

The spelling of 66223122 in words is "sixty-six million, two hundred twenty-three thousand, one hundred twenty-two".