2112204521 has 16 divisors (see below), whose sum is σ = 2547763200. Its totient is φ = 1710607248.

The previous prime is 2112204463. The next prime is 2112204527. The reversal of 2112204521 is 1254022112.

It is a de Polignac number, because none of the positive numbers 2^k-2112204521 is a prime.

It is a super-2 number, since 2×2112204521² = 8922815877065678882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2112204493 and 2112204502.

It is not an unprimeable number, because it can be changed into a prime (2112204527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29456 + ... + 71358.

It is an arithmetic number, because the mean of its divisors is an integer number (159235200).

Almost surely, 2^2112204521 is an apocalyptic number.

It is an amenable number.

2112204521 is a deficient number, since it is larger than the sum of its proper divisors (435558679).

2112204521 is a wasteful number, since it uses less digits than its factorization.

2112204521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42308.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 2112204521 is about 45958.7262769542. The cubic root of 2112204521 is about 1283.0551453162.

Adding to 2112204521 its reverse (1254022112), we get a palindrome (3366226633).

The spelling of 2112204521 in words is "two billion, one hundred twelve million, two hundred four thousand, five hundred twenty-one".