12261181335 has 64 divisors (see below), whose sum is σ = 21391896960. Its totient is φ = 5960908800.

The previous prime is 12261181321. The next prime is 12261181351. The reversal of 12261181335 is 53318116221.

It is not a de Polignac number, because 12261181335 - 2⁴ = 12261181319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12261181296 and 12261181305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12151311 + ... + 12152319.

It is an arithmetic number, because the mean of its divisors is an integer number (334248390).

Almost surely, 2^12261181335 is an apocalyptic number.

12261181335 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12261181335 is a deficient number, since it is larger than the sum of its proper divisors (9130715625).

12261181335 is a wasteful number, since it uses less digits than its factorization.

12261181335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1748.

The product of its digits is 8640, while the sum is 33.

Adding to 12261181335 its reverse (53318116221), we get a palindrome (65579297556).

The spelling of 12261181335 in words is "twelve billion, two hundred sixty-one million, one hundred eighty-one thousand, three hundred thirty-five".