16443122 has 4 divisors (see below), whose sum is σ = 24664686. Its totient is φ = 8221560.

The previous prime is 16443121. The next prime is 16443127. The reversal of 16443122 is 22134461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10297681 + 6145441 = 3209^2 + 2479^2 .

It is a super-3 number, since 3×16443122³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (16443121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4110779 + ... + 4110782.

Almost surely, 2^16443122 is an apocalyptic number.

16443122 is a deficient number, since it is larger than the sum of its proper divisors (8221564).

16443122 is an equidigital number, since it uses as much as digits as its factorization.

16443122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8221563.

The product of its digits is 1152, while the sum is 23.

The square root of 16443122 is about 4055.0119605249. The cubic root of 16443122 is about 254.2893039393.

Adding to 16443122 its reverse (22134461), we get a palindrome (38577583).

The spelling of 16443122 in words is "sixteen million, four hundred forty-three thousand, one hundred twenty-two".