2216162340861 has 32 divisors (see below), whose sum is σ = 3503165030400. Its totient is φ = 1219852033920.

The previous prime is 2216162340731. The next prime is 2216162340869. The reversal of 2216162340861 is 1680432616122.

It is not a de Polignac number, because 2216162340861 - 2¹⁴ = 2216162324477 is a prime.

It is a super-2 number, since 2×2216162340861² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2216162340869) 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, 16222741 + ... + 16358778.

It is an arithmetic number, because the mean of its divisors is an integer number (109473907200).

Almost surely, 2^{2216162340861} is an apocalyptic number.

2216162340861 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2216162340861 is a deficient number, since it is larger than the sum of its proper divisors (1287002689539).

2216162340861 is a wasteful number, since it uses less digits than its factorization.

2216162340861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32581649.

The product of its (nonzero) digits is 165888, while the sum is 42.

Adding to 2216162340861 its reverse (1680432616122), we get a palindrome (3896594956983).

The spelling of 2216162340861 in words is "two trillion, two hundred sixteen billion, one hundred sixty-two million, three hundred forty thousand, eight hundred sixty-one".