2101099 has 16 divisors (see below), whose sum is σ = 2822400. Its totient is φ = 1510560.

The previous prime is 2101093. The next prime is 2101111. The reversal of 2101099 is 9901012.

2101099 = T₄₂₆ + T₄₂₇ + ... + T₄₄₇.

It is a cyclic number.

It is not a de Polignac number, because 2101099 - 2³ = 2101091 is a prime.

2101099 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101091) 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, 49 + ... + 2050.

It is an arithmetic number, because the mean of its divisors is an integer number (176400).

2^2101099 is an apocalyptic number.

2101099 is a deficient number, since it is larger than the sum of its proper divisors (721301).

2101099 is a wasteful number, since it uses less digits than its factorization.

2101099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2130.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 2101099 is about 1449.5168160460. The cubic root of 2101099 is about 128.0802515951.

It can be divided in two parts, 210109 and 9, that multiplied together give a palindrome (1890981).

The spelling of 2101099 in words is "two million, one hundred one thousand, ninety-nine".