216122161215 has 16 divisors (see below), whose sum is σ = 360830043648. Its totient is φ = 110253624096.

The previous prime is 216122161201. The next prime is 216122161249. The reversal of 216122161215 is 512161221612.

It is not a de Polignac number, because 216122161215 - 2⁹ = 216122160703 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 313220179 + ... + 313220868.

It is an arithmetic number, because the mean of its divisors is an integer number (22551877728).

Almost surely, 2^216122161215 is an apocalyptic number.

216122161215 is a deficient number, since it is larger than the sum of its proper divisors (144707882433).

216122161215 is a wasteful number, since it uses less digits than its factorization.

216122161215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626441078.

The product of its digits is 2880, while the sum is 30.

Adding to 216122161215 its reverse (512161221612), we get a palindrome (728283382827).

The spelling of 216122161215 in words is "two hundred sixteen billion, one hundred twenty-two million, one hundred sixty-one thousand, two hundred fifteen".