2101355 has 4 divisors (see below), whose sum is σ = 2521632. Its totient is φ = 1681080.

The previous prime is 2101327. The next prime is 2101357. The reversal of 2101355 is 5531012.

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

It is not a de Polignac number, because 2101355 - 2¹² = 2097259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101357) 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, 210131 + ... + 210140.

It is an arithmetic number, because the mean of its divisors is an integer number (630408).

2^2101355 is an apocalyptic number.

2101355 is a deficient number, since it is larger than the sum of its proper divisors (420277).

2101355 is an equidigital number, since it uses as much as digits as its factorization.

2101355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420276.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 2101355 is about 1449.6051186444. The cubic root of 2101355 is about 128.0854531924.

Adding to 2101355 its reverse (5531012), we get a palindrome (7632367).

The spelling of 2101355 in words is "two million, one hundred one thousand, three hundred fifty-five".