2121099 has 16 divisors (see below), whose sum is σ = 2949408. Its totient is φ = 1354752.

The previous prime is 2121043. The next prime is 2121121. The reversal of 2121099 is 9901212.

It is not a de Polignac number, because 2121099 - 2⁸ = 2120843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2121029) 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, 10669 + ... + 10865.

It is an arithmetic number, because the mean of its divisors is an integer number (184338).

2^2121099 is an apocalyptic number.

2121099 is a deficient number, since it is larger than the sum of its proper divisors (828309).

2121099 is a wasteful number, since it uses less digits than its factorization.

2121099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334.

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 2121099 is about 1456.3993271078. The cubic root of 2121099 is about 128.4853602100.

The spelling of 2121099 in words is "two million, one hundred twenty-one thousand, ninety-nine".