12126261 has 16 divisors (see below), whose sum is σ = 18671744. Its totient is φ = 6856704.

The previous prime is 12126223. The next prime is 12126299. The reversal of 12126261 is 16262121.

12126261 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12126223) and next prime (12126299).

It is not a de Polignac number, because 12126261 - 2⁶ = 12126197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12126461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 940 + ... + 5013.

It is an arithmetic number, because the mean of its divisors is an integer number (1166984).

Almost surely, 2^12126261 is an apocalyptic number.

It is an amenable number.

12126261 is a deficient number, since it is larger than the sum of its proper divisors (6545483).

12126261 is an equidigital number, since it uses as much as digits as its factorization.

12126261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6060.

The product of its digits is 288, while the sum is 21.

The square root of 12126261 is about 3482.2781336361. The cubic root of 12126261 is about 229.7430084825.

Adding to 12126261 its reverse (16262121), we get a palindrome (28388382).

The spelling of 12126261 in words is "twelve million, one hundred twenty-six thousand, two hundred sixty-one".