2122813 has 16 divisors (see below), whose sum is σ = 2787840. Its totient is φ = 1566000.

The previous prime is 2122793. The next prime is 2122817. The reversal of 2122813 is 3182212.

It is a cyclic number.

It is not a de Polignac number, because 2122813 - 2¹³ = 2114621 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 738 + ... + 2188.

It is an arithmetic number, because the mean of its divisors is an integer number (174240).

2^2122813 is an apocalyptic number.

It is an amenable number.

2122813 is a deficient number, since it is larger than the sum of its proper divisors (665027).

2122813 is a wasteful number, since it uses less digits than its factorization.

2122813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1488.

The product of its digits is 192, while the sum is 19.

The square root of 2122813 is about 1456.9876457953. The cubic root of 2122813 is about 128.5199593518.

It can be divided in two parts, 212 and 2813, that added together give a square (3025 = 55²).

The spelling of 2122813 in words is "two million, one hundred twenty-two thousand, eight hundred thirteen".