2121677 has 4 divisors (see below), whose sum is σ = 2128896. Its totient is φ = 2114460.

The previous prime is 2121667. The next prime is 2121683. The reversal of 2121677 is 7761212.

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 2121677 - 2⁴ = 2121661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121607) 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, 3149 + ... + 3762.

It is an arithmetic number, because the mean of its divisors is an integer number (532224).

2^2121677 is an apocalyptic number.

It is an amenable number.

2121677 is a deficient number, since it is larger than the sum of its proper divisors (7219).

2121677 is an equidigital number, since it uses as much as digits as its factorization.

2121677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7218.

The product of its digits is 1176, while the sum is 26.

The square root of 2121677 is about 1456.5977481790. The cubic root of 2121677 is about 128.4970299141.

Adding to 2121677 its reverse (7761212), we get a palindrome (9882889).

The spelling of 2121677 in words is "two million, one hundred twenty-one thousand, six hundred seventy-seven".