2101279 has 4 divisors (see below), whose sum is σ = 2110240. Its totient is φ = 2092320.

The previous prime is 2101277. The next prime is 2101283. The reversal of 2101279 is 9721012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2101279 - 2¹ = 2101277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4119 + ... + 4600.

It is an arithmetic number, because the mean of its divisors is an integer number (527560).

2^2101279 is an apocalyptic number.

2101279 is a deficient number, since it is larger than the sum of its proper divisors (8961).

2101279 is an equidigital number, since it uses as much as digits as its factorization.

2101279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8960.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 2101279 is about 1449.5789043719. The cubic root of 2101279 is about 128.0839090123.

The spelling of 2101279 in words is "two million, one hundred one thousand, two hundred seventy-nine".