2122509 has 16 divisors (see below), whose sum is σ = 3110400. Its totient is φ = 1281456.

The previous prime is 2122507. The next prime is 2122511. The reversal of 2122509 is 9052212.

It is an interprime number because it is at equal distance from previous prime (2122507) and next prime (2122511).

It is not a de Polignac number, because 2122509 - 2¹ = 2122507 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122507) 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, 502 + ... + 2120.

It is an arithmetic number, because the mean of its divisors is an integer number (194400).

2^2122509 is an apocalyptic number.

It is an amenable number.

2122509 is a deficient number, since it is larger than the sum of its proper divisors (987891).

2122509 is a wasteful number, since it uses less digits than its factorization.

2122509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1664.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 2122509 is about 1456.8833172221. The cubic root of 2122509 is about 128.5138241069.

The spelling of 2122509 in words is "two million, one hundred twenty-two thousand, five hundred nine".