2121693 has 16 divisors (see below), whose sum is σ = 3280896. Its totient is φ = 1194480.

The previous prime is 2121683. The next prime is 2121737. The reversal of 2121693 is 3961212.

It is not a de Polignac number, because 2121693 - 2⁵ = 2121661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 780 + ... + 2202.

It is an arithmetic number, because the mean of its divisors is an integer number (205056).

2^2121693 is an apocalyptic number.

It is an amenable number.

2121693 is a deficient number, since it is larger than the sum of its proper divisors (1159203).

2121693 is a wasteful number, since it uses less digits than its factorization.

2121693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1504.

The product of its digits is 648, while the sum is 24.

The square root of 2121693 is about 1456.6032404193. The cubic root of 2121693 is about 128.4973529208.

The spelling of 2121693 in words is "two million, one hundred twenty-one thousand, six hundred ninety-three".