12227761611 has 24 divisors (see below), whose sum is σ = 19133543520. Its totient is φ = 7524764208.

The previous prime is 12227761577. The next prime is 12227761621. The reversal of 12227761611 is 11616772221.

12227761611 is a `hidden beast` number, since 1 + 2 + 2 + 27 + 7 + 616 + 11 = 666.

It is not a de Polignac number, because 12227761611 - 2²⁹ = 11690890699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12227761621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 289431 + ... + 328976.

It is an arithmetic number, because the mean of its divisors is an integer number (797230980).

Almost surely, 2^12227761611 is an apocalyptic number.

12227761611 is a deficient number, since it is larger than the sum of its proper divisors (6905781909).

12227761611 is an equidigital number, since it uses as much as digits as its factorization.

12227761611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618452 (or 618423 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The spelling of 12227761611 in words is "twelve billion, two hundred twenty-seven million, seven hundred sixty-one thousand, six hundred eleven".