16022163221 has 4 divisors (see below), whose sum is σ = 16394771712. Its totient is φ = 15649554732.

The previous prime is 16022163167. The next prime is 16022163233. The reversal of 16022163221 is 12236122061.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12236122061 = 23 ⋅532005307.

It is a cyclic number.

It is not a de Polignac number, because 16022163221 - 2²² = 16017968917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16022163271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186304181 + ... + 186304266.

It is an arithmetic number, because the mean of its divisors is an integer number (4098692928).

Almost surely, 2^16022163221 is an apocalyptic number.

It is an amenable number.

16022163221 is a deficient number, since it is larger than the sum of its proper divisors (372608491).

16022163221 is an equidigital number, since it uses as much as digits as its factorization.

16022163221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372608490.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 16022163221 its reverse (12236122061), we get a palindrome (28258285282).

The spelling of 16022163221 in words is "sixteen billion, twenty-two million, one hundred sixty-three thousand, two hundred twenty-one".