12101261 has 4 divisors (see below), whose sum is σ = 12111072. Its totient is φ = 12091452.

The previous prime is 12101237. The next prime is 12101269. The reversal of 12101261 is 16210121.

12101261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 16210121 = 929 ⋅17449.

It is a cyclic number.

It is not a de Polignac number, because 12101261 - 2²² = 7906957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101269) 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, 2735 + ... + 5628.

It is an arithmetic number, because the mean of its divisors is an integer number (3027768).

Almost surely, 2^12101261 is an apocalyptic number.

It is an amenable number.

12101261 is a deficient number, since it is larger than the sum of its proper divisors (9811).

12101261 is an equidigital number, since it uses as much as digits as its factorization.

12101261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9810.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 12101261 is about 3478.6866774690. The cubic root of 12101261 is about 229.5850173039.

Adding to 12101261 its reverse (16210121), we get a palindrome (28311382).

The spelling of 12101261 in words is "twelve million, one hundred one thousand, two hundred sixty-one".