2101015 has 8 divisors (see below), whose sum is σ = 2881440. Its totient is φ = 1440672.

The previous prime is 2101007. The next prime is 2101019. The reversal of 2101015 is 5101012.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2101015 - 2³ = 2101007 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2100992 and 2101010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101019) 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, 29980 + ... + 30049.

It is an arithmetic number, because the mean of its divisors is an integer number (360180).

2^2101015 is an apocalyptic number.

2101015 is a deficient number, since it is larger than the sum of its proper divisors (780425).

2101015 is an equidigital number, since it uses as much as digits as its factorization.

2101015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60041.

The product of its (nonzero) digits is 10, while the sum is 10.

The square root of 2101015 is about 1449.4878405837. The cubic root of 2101015 is about 128.0785447289.

Adding to 2101015 its reverse (5101012), we get a palindrome (7202027).

It can be divided in two parts, 21010 and 15, that added together give a square (21025 = 145²).

The spelling of 2101015 in words is "two million, one hundred one thousand, fifteen".