2125216 has 12 divisors (see below), whose sum is σ = 4184082. Its totient is φ = 1062592.

The previous prime is 2125181. The next prime is 2125219. The reversal of 2125216 is 6125212.

It can be written as a sum of positive squares in only one way, i.e., 1948816 + 176400 = 1396^2 + 420^2 .

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 2125193 and 2125202.

It is not an unprimeable number, because it can be changed into a prime (2125219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33175 + ... + 33238.

2^2125216 is an apocalyptic number.

It is an amenable number.

2125216 is a deficient number, since it is larger than the sum of its proper divisors (2058866).

2125216 is an equidigital number, since it uses as much as digits as its factorization.

2125216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66423 (or 66415 counting only the distinct ones).

The product of its digits is 240, while the sum is 19.

The square root of 2125216 is about 1457.8120592175. The cubic root of 2125216 is about 128.5684354388.

The spelling of 2125216 in words is "two million, one hundred twenty-five thousand, two hundred sixteen".