2123199 has 32 divisors (see below), whose sum is σ = 3548160. Its totient is φ = 1245024.

The previous prime is 2123167. The next prime is 2123203. The reversal of 2123199 is 9913212.

It is not a de Polignac number, because 2123199 - 2⁵ = 2123167 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7942 + ... + 8204.

It is an arithmetic number, because the mean of its divisors is an integer number (110880).

2^2123199 is an apocalyptic number.

2123199 is a deficient number, since it is larger than the sum of its proper divisors (1424961).

2123199 is a wasteful number, since it uses less digits than its factorization.

2123199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308 (or 302 counting only the distinct ones).

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

The square root of 2123199 is about 1457.1201048644. The cubic root of 2123199 is about 128.5277486542.

It can be divided in two parts, 21 and 23199, that added together give a triangular number (23220 = T₂₁₅).

The spelling of 2123199 in words is "two million, one hundred twenty-three thousand, one hundred ninety-nine".