26121 has 4 divisors (see below), whose sum is σ = 34832. Its totient is φ = 17412.

The previous prime is 26119. The next prime is 26141. The reversal of 26121 is 12162.

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 not a de Polignac number, because 26121 - 2¹ = 26119 is a prime.

It is a D-number.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 26097 and 26106.

It is not an unprimeable number, because it can be changed into a prime (26111) 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, 4351 + ... + 4356.

It is an arithmetic number, because the mean of its divisors is an integer number (8708).

2²⁶¹²¹ is an apocalyptic number.

It is an amenable number.

26121 is a deficient number, since it is larger than the sum of its proper divisors (8711).

26121 is an equidigital number, since it uses as much as digits as its factorization.

26121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8710.

The product of its digits is 24, while the sum is 12.

The square root of 26121 is about 161.6199245143. The cubic root of 26121 is about 29.6708462458.

Adding to 26121 its reverse (12162), we get a palindrome (38283).

It can be divided in two parts, 261 and 21, that added together give a palindrome (282).

The spelling of 26121 in words is "twenty-six thousand, one hundred twenty-one".