12261069 has 6 divisors (see below), whose sum is σ = 17710446. Its totient is φ = 8174040.

The previous prime is 12261059. The next prime is 12261077. The reversal of 12261069 is 96016221.

It can be written as a sum of positive squares in only one way, i.e., 11985444 + 275625 = 3462^2 + 525^2 .

It is not a de Polignac number, because 12261069 - 2⁸ = 12260813 is a prime.

It is a super-2 number, since 2×12261069² = 300667626045522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12261059) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 681162 + ... + 681179.

It is an arithmetic number, because the mean of its divisors is an integer number (2951741).

Almost surely, 2^12261069 is an apocalyptic number.

It is an amenable number.

12261069 is a deficient number, since it is larger than the sum of its proper divisors (5449377).

12261069 is a wasteful number, since it uses less digits than its factorization.

12261069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362347 (or 1362344 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 12261069 is about 3501.5809286664. The cubic root of 12261069 is about 230.5912262438.

The spelling of 12261069 in words is "twelve million, two hundred sixty-one thousand, sixty-nine".