12261333542116 has 12 divisors (see below), whose sum is σ = 21461722633260. Its totient is φ = 6129412789760.

The previous prime is 12261333542093. The next prime is 12261333542189. The reversal of 12261333542116 is 61124533316221.

It can be written as a sum of positive squares in 2 ways, for example, as 4284403214400 + 7976930327716 = 2069880^2 + 2824346^2 .

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, 313473325 + ... + 313512436.

It is an arithmetic number, because the mean of its divisors is an integer number (1788476886105).

Almost surely, 2^{12261333542116} is an apocalyptic number.

It is an amenable number.

12261333542116 is a deficient number, since it is larger than the sum of its proper divisors (9200389091144).

12261333542116 is a wasteful number, since it uses less digits than its factorization.

12261333542116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626990654 (or 626990652 counting only the distinct ones).

The product of its digits is 155520, while the sum is 40.

Adding to 12261333542116 its reverse (61124533316221), we get a palindrome (73385866858337).

The spelling of 12261333542116 in words is "twelve trillion, two hundred sixty-one billion, three hundred thirty-three million, five hundred forty-two thousand, one hundred sixteen".