2101198 has 16 divisors (see below), whose sum is σ = 3466800. Its totient is φ = 947200.

The previous prime is 2101189. The next prime is 2101199. The reversal of 2101198 is 8911012.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2958 + ... + 3598.

It is an arithmetic number, because the mean of its divisors is an integer number (216675).

2^2101198 is an apocalyptic number.

2101198 is a deficient number, since it is larger than the sum of its proper divisors (1365602).

2101198 is a wasteful number, since it uses less digits than its factorization.

2101198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 2101198 is about 1449.5509649543. The cubic root of 2101198 is about 128.0822632004.

The spelling of 2101198 in words is "two million, one hundred one thousand, one hundred ninety-eight".