16222161215 has 32 divisors (see below), whose sum is σ = 21369096000. Its totient is φ = 11748925440.

The previous prime is 16222161187. The next prime is 16222161217. The reversal of 16222161215 is 51216122261.

It is a de Polignac number, because none of the positive numbers 2^k-16222161215 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16222161217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1717205 + ... + 1726625.

It is an arithmetic number, because the mean of its divisors is an integer number (667784250).

Almost surely, 2^16222161215 is an apocalyptic number.

16222161215 is a deficient number, since it is larger than the sum of its proper divisors (5146934785).

16222161215 is a wasteful number, since it uses less digits than its factorization.

16222161215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9947.

The product of its digits is 2880, while the sum is 29.

Adding to 16222161215 its reverse (51216122261), we get a palindrome (67438283476).

The spelling of 16222161215 in words is "sixteen billion, two hundred twenty-two million, one hundred sixty-one thousand, two hundred fifteen".