12261240104 has 16 divisors (see below), whose sum is σ = 22992800820. Its totient is φ = 6129826560.

The previous prime is 12261240073. The next prime is 12261240137. The reversal of 12261240104 is 40104216221.

It can be written as a sum of positive squares in 2 ways, for example, as 9408612004 + 2852628100 = 96998^2 + 53410^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12261240104.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30737 + ... + 159584.

Almost surely, 2^12261240104 is an apocalyptic number.

It is an amenable number.

12261240104 is a deficient number, since it is larger than the sum of its proper divisors (10731560716).

12261240104 is a wasteful number, since it uses less digits than its factorization.

12261240104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198380 (or 198376 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 12261240104 its reverse (40104216221), we get a palindrome (52365456325).

The spelling of 12261240104 in words is "twelve billion, two hundred sixty-one million, two hundred forty thousand, one hundred four".