2101273 has 4 divisors (see below), whose sum is σ = 2169088. Its totient is φ = 2033460.

The previous prime is 2101261. The next prime is 2101277. The reversal of 2101273 is 3721012.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2101273 - 2¹³ = 2093081 is a prime.

It is a Duffinian 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 (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33861 + ... + 33922.

It is an arithmetic number, because the mean of its divisors is an integer number (542272).

2^2101273 is an apocalyptic number.

It is an amenable number.

2101273 is a deficient number, since it is larger than the sum of its proper divisors (67815).

2101273 is an equidigital number, since it uses as much as digits as its factorization.

2101273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67814.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 2101273 is about 1449.5768348039. The cubic root of 2101273 is about 128.0837871017.

Adding to 2101273 its reverse (3721012), we get a palindrome (5822285).

It can be divided in two parts, 21012 and 73, that multiplied together give a triangular number (1533876 = T₁₇₅₁).

The spelling of 2101273 in words is "two million, one hundred one thousand, two hundred seventy-three".