2121713 has 4 divisors (see below), whose sum is σ = 2314608. Its totient is φ = 1928820.

The previous prime is 2121683. The next prime is 2121737. The reversal of 2121713 is 3171212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2121713 - 2¹⁴ = 2105329 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2121691 and 2121700.

It is not an unprimeable number, because it can be changed into a prime (2121793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96431 + ... + 96452.

It is an arithmetic number, because the mean of its divisors is an integer number (578652).

2^2121713 is an apocalyptic number.

It is an amenable number.

2121713 is a deficient number, since it is larger than the sum of its proper divisors (192895).

2121713 is a wasteful number, since it uses less digits than its factorization.

2121713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192894.

The product of its digits is 84, while the sum is 17.

The square root of 2121713 is about 1456.6101056906. The cubic root of 2121713 is about 128.4977566768.

Adding to 2121713 its reverse (3171212), we get a palindrome (5292925).

The spelling of 2121713 in words is "two million, one hundred twenty-one thousand, seven hundred thirteen".