2121376 has 12 divisors (see below), whose sum is σ = 4176522. Its totient is φ = 1060672.

The previous prime is 2121373. The next prime is 2121377. The reversal of 2121376 is 6731212.

It can be written as a sum of positive squares in only one way, i.e., 2016400 + 104976 = 1420^2 + 324^2 .

It is a super-2 number, since 2×2121376² = 9000472266752, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2121373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33115 + ... + 33178.

2^2121376 is an apocalyptic number.

It is an amenable number.

2121376 is a deficient number, since it is larger than the sum of its proper divisors (2055146).

2121376 is an equidigital number, since it uses as much as digits as its factorization.

2121376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66303 (or 66295 counting only the distinct ones).

The product of its digits is 504, while the sum is 22.

The square root of 2121376 is about 1456.4944215478. The cubic root of 2121376 is about 128.4909530490.

Adding to 2121376 its reverse (6731212), we get a palindrome (8852588).

The spelling of 2121376 in words is "two million, one hundred twenty-one thousand, three hundred seventy-six".