2199123 has 16 divisors (see below), whose sum is σ = 3302400. Its totient is φ = 1446120.

The previous prime is 2199121. The next prime is 2199133. The reversal of 2199123 is 3219912.

It is not a de Polignac number, because 2199123 - 2¹ = 2199121 is a prime.

It is a super-2 number, since 2×2199123² = 9672283938258, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

2199123 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2199121) 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, 1618 + ... + 2648.

It is an arithmetic number, because the mean of its divisors is an integer number (206400).

2^2199123 is an apocalyptic number.

2199123 is a deficient number, since it is larger than the sum of its proper divisors (1103277).

2199123 is a wasteful number, since it uses less digits than its factorization.

2199123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119 (or 1113 counting only the distinct ones).

The product of its digits is 972, while the sum is 27.

The square root of 2199123 is about 1482.9440313107. The cubic root of 2199123 is about 130.0418602867.

The spelling of 2199123 in words is "two million, one hundred ninety-nine thousand, one hundred twenty-three".