2133217 has 2 divisors, whose sum is σ = 2133218. Its totient is φ = 2133216.

The previous prime is 2133191. The next prime is 2133251. The reversal of 2133217 is 7123312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1115136 + 1018081 = 1056^2 + 1009^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2133217 is a prime.

It is a super-2 number, since 2×2133217² = 9101229538178, which contains 22 as substring.

2133217 is a lucky number.

It is a plaindrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 2133194 and 2133203.

It is not a weakly prime, because it can be changed into another prime (2133277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1066608 + 1066609.

It is an arithmetic number, because the mean of its divisors is an integer number (1066609).

2^2133217 is an apocalyptic number.

It is an amenable number.

2133217 is a deficient number, since it is larger than the sum of its proper divisors (1).

2133217 is an equidigital number, since it uses as much as digits as its factorization.

2133217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 252, while the sum is 19.

The square root of 2133217 is about 1460.5536621432. The cubic root of 2133217 is about 128.7295779341.

Adding to 2133217 its reverse (7123312), we get a palindrome (9256529).

The spelling of 2133217 in words is "two million, one hundred thirty-three thousand, two hundred seventeen".