16122220 has 12 divisors (see below), whose sum is σ = 33856704. Its totient is φ = 6448880.

The previous prime is 16122217. The next prime is 16122233. The reversal of 16122220 is 2222161.

It is a junction number, because it is equal to n+sod(n) for n = 16122194 and 16122203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 403036 + ... + 403075.

It is an arithmetic number, because the mean of its divisors is an integer number (2821392).

Almost surely, 2^16122220 is an apocalyptic number.

16122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16122220 is an abundant number, since it is smaller than the sum of its proper divisors (17734484).

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

16122220 is a wasteful number, since it uses less digits than its factorization.

16122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806120 (or 806118 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 16122220 is about 4015.2484356513. The cubic root of 16122220 is about 252.6241979599.

Adding to 16122220 its reverse (2222161), we get a palindrome (18344381).

The spelling of 16122220 in words is "sixteen million, one hundred twenty-two thousand, two hundred twenty".