12261660262252 has 6 divisors (see below), whose sum is σ = 21457905458948. Its totient is φ = 6130830131124.

The previous prime is 12261660262237. The next prime is 12261660262279. The reversal of 12261660262252 is 25226206616221.

It is a super-2 number, since 2×12261660262252² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12261660262199 and 12261660262208.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1532707532778 + ... + 1532707532785.

Almost surely, 2^{12261660262252} is an apocalyptic number.

It is an amenable number.

12261660262252 is a deficient number, since it is larger than the sum of its proper divisors (9196245196696).

12261660262252 is a wasteful number, since it uses less digits than its factorization.

12261660262252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3065415065567 (or 3065415065565 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 43.

Adding to 12261660262252 its reverse (25226206616221), we get a palindrome (37487866878473).

The spelling of 12261660262252 in words is "twelve trillion, two hundred sixty-one billion, six hundred sixty million, two hundred sixty-two thousand, two hundred fifty-two".