2112221516 has 48 divisors (see below), whose sum is σ = 3880348416. Its totient is φ = 1005073344.

The previous prime is 2112221513. The next prime is 2112221567. The reversal of 2112221516 is 6151222112.

It is a super-2 number, since 2×2112221516² = 8922959465306676512, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2112221491 and 2112221500.

It is not an unprimeable number, because it can be changed into a prime (2112221513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1313585 + ... + 1315191.

It is an arithmetic number, because the mean of its divisors is an integer number (80840592).

Almost surely, 2^2112221516 is an apocalyptic number.

It is an amenable number.

2112221516 is a deficient number, since it is larger than the sum of its proper divisors (1768126900).

2112221516 is a wasteful number, since it uses less digits than its factorization.

2112221516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1838 (or 1836 counting only the distinct ones).

The product of its digits is 480, while the sum is 23.

The square root of 2112221516 is about 45958.9111707403. The cubic root of 2112221516 is about 1283.0585865018.

Adding to 2112221516 its reverse (6151222112), we get a palindrome (8263443628).

The spelling of 2112221516 in words is "two billion, one hundred twelve million, two hundred twenty-one thousand, five hundred sixteen".