12221361459 has 16 divisors (see below), whose sum is σ = 18127334400. Its totient is φ = 8137848168.

The previous prime is 12221361457. The next prime is 12221361473. The reversal of 12221361459 is 95416312221.

12221361459 is a `hidden beast` number, since 1 + 2 + 22 + 13 + 614 + 5 + 9 = 666.

It is not a de Polignac number, because 12221361459 - 2¹ = 12221361457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12221361457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 247099 + ... + 292404.

It is an arithmetic number, because the mean of its divisors is an integer number (1132958400).

Almost surely, 2^12221361459 is an apocalyptic number.

12221361459 is a deficient number, since it is larger than the sum of its proper divisors (5905972941).

12221361459 is an equidigital number, since it uses as much as digits as its factorization.

12221361459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540351 (or 540345 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

It can be divided in two parts, 12221 and 361459, that added together give a triangular number (373680 = T₈₆₄).

The spelling of 12221361459 in words is "twelve billion, two hundred twenty-one million, three hundred sixty-one thousand, four hundred fifty-nine".