2261101 has 4 divisors (see below), whose sum is σ = 2339100. Its totient is φ = 2183104.

The previous prime is 2261099. The next prime is 2261111. The reversal of 2261101 is 1011622.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1011622 = 2 ⋅505811.

It can be written as a sum of positive squares in 2 ways, for example, as 1320201 + 940900 = 1149^2 + 970^2 .

It is a cyclic number.

It is not a de Polignac number, because 2261101 - 2¹ = 2261099 is a prime.

It is a super-2 number, since 2×2261101² = 10225155464402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2261111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38956 + ... + 39013.

It is an arithmetic number, because the mean of its divisors is an integer number (584775).

2^2261101 is an apocalyptic number.

It is an amenable number.

2261101 is a deficient number, since it is larger than the sum of its proper divisors (77999).

2261101 is an equidigital number, since it uses as much as digits as its factorization.

2261101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77998.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2261101 is about 1503.6957804024. The cubic root of 2261101 is about 131.2522188589.

Adding to 2261101 its reverse (1011622), we get a palindrome (3272723).

The spelling of 2261101 in words is "two million, two hundred sixty-one thousand, one hundred one".