16161122 has 4 divisors (see below), whose sum is σ = 24241686. Its totient is φ = 8080560.

The previous prime is 16161121. The next prime is 16161127. The reversal of 16161122 is 22116161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22116161 = 127 ⋅174143.

It can be written as a sum of positive squares in only one way, i.e., 15912121 + 249001 = 3989^2 + 499^2 .

It is a super-2 number, since 2×16161122² = 522363728597768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16161094 and 16161103.

It is not an unprimeable number, because it can be changed into a prime (16161121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4040279 + ... + 4040282.

Almost surely, 2^16161122 is an apocalyptic number.

16161122 is a deficient number, since it is larger than the sum of its proper divisors (8080564).

16161122 is an equidigital number, since it uses as much as digits as its factorization.

16161122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8080563.

The product of its digits is 144, while the sum is 20.

The square root of 16161122 is about 4020.0897999920. The cubic root of 16161122 is about 252.8272240250.

Adding to 16161122 its reverse (22116161), we get a palindrome (38277283).

The spelling of 16161122 in words is "sixteen million, one hundred sixty-one thousand, one hundred twenty-two".