16121822 has 8 divisors (see below), whose sum is σ = 24422472. Its totient is φ = 7981000.

The previous prime is 16121803. The next prime is 16121839. The reversal of 16121822 is 22812161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39704 + ... + 40107.

It is an arithmetic number, because the mean of its divisors is an integer number (3052809).

Almost surely, 2^16121822 is an apocalyptic number.

16121822 is a deficient number, since it is larger than the sum of its proper divisors (8300650).

16121822 is a wasteful number, since it uses less digits than its factorization.

16121822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79914.

The product of its digits is 384, while the sum is 23.

The square root of 16121822 is about 4015.1988742776. The cubic root of 16121822 is about 252.6221191466.

Adding to 16121822 its reverse (22812161), we get a palindrome (38933983).

The spelling of 16121822 in words is "sixteen million, one hundred twenty-one thousand, eight hundred twenty-two".