2101197 has 8 divisors (see below), whose sum is σ = 3201856. Its totient is φ = 1200672.

The previous prime is 2101189. The next prime is 2101199. The reversal of 2101197 is 7911012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2101197 - 2³ = 2101189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 100057 = 2101197 / (2 + 1 + 0 + 1 + 1 + 9 + 7).

2101197 is a lucky number.

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, 50008 + ... + 50049.

It is an arithmetic number, because the mean of its divisors is an integer number (400232).

2^2101197 is an apocalyptic number.

It is an amenable number.

2101197 is a deficient number, since it is larger than the sum of its proper divisors (1100659).

2101197 is a wasteful number, since it uses less digits than its factorization.

2101197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100067.

The product of its (nonzero) digits is 126, while the sum is 21.

The square root of 2101197 is about 1449.5506200199. The cubic root of 2101197 is about 128.0822428815.

The spelling of 2101197 in words is "two million, one hundred one thousand, one hundred ninety-seven".