2122345 has 8 divisors (see below), whose sum is σ = 2571264. Its totient is φ = 1681584.

The previous prime is 2122333. The next prime is 2122349. The reversal of 2122345 is 5432212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2122345 - 2¹¹ = 2120297 is a prime.

It is a d-powerful number, because it can be written as 2⁵ + 1 + 2⁹ + 2¹⁹ + 3¹³ + 4³ + 5⁵ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2122349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1449 + ... + 2518.

It is an arithmetic number, because the mean of its divisors is an integer number (321408).

2^2122345 is an apocalyptic number.

It is an amenable number.

2122345 is a deficient number, since it is larger than the sum of its proper divisors (448919).

2122345 is a wasteful number, since it uses less digits than its factorization.

2122345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4079.

The product of its digits is 480, while the sum is 19.

The square root of 2122345 is about 1456.8270315998. The cubic root of 2122345 is about 128.5105140604.

Adding to 2122345 its reverse (5432212), we get a palindrome (7554557).

It can be divided in two parts, 21 and 22345, that added together give a triangular number (22366 = T₂₁₁).

The spelling of 2122345 in words is "two million, one hundred twenty-two thousand, three hundred forty-five".