2216522945 has 16 divisors (see below), whose sum is σ = 3273634560. Its totient is φ = 1402985664.

The previous prime is 2216522921. The next prime is 2216522947. The reversal of 2216522945 is 5492256122.

It is a cyclic number.

It is not a de Polignac number, because 2216522945 - 2²⁰ = 2215474369 is a prime.

It is a super-2 number, since 2×2216522945² = 9825947931422946050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2216522899 and 2216522908.

It is not an unprimeable number, because it can be changed into a prime (2216522947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2435285 + ... + 2436194.

It is an arithmetic number, because the mean of its divisors is an integer number (204602160).

Almost surely, 2^2216522945 is an apocalyptic number.

It is an amenable number.

2216522945 is a deficient number, since it is larger than the sum of its proper divisors (1057111615).

2216522945 is a wasteful number, since it uses less digits than its factorization.

2216522945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4871504.

The product of its digits is 86400, while the sum is 38.

The square root of 2216522945 is about 47079.9633071225. The cubic root of 2216522945 is about 1303.8393295162.

The spelling of 2216522945 in words is "two billion, two hundred sixteen million, five hundred twenty-two thousand, nine hundred forty-five".