12655443322 has 4 divisors (see below), whose sum is σ = 18983164986. Its totient is φ = 6327721660.

The previous prime is 12655443299. The next prime is 12655443337. The reversal of 12655443322 is 22334455621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22334455621 = 31387 ⋅711583.

It can be written as a sum of positive squares in only one way, i.e., 10749335041 + 1906108281 = 103679^2 + 43659^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3163860829 + ... + 3163860832.

Almost surely, 2^12655443322 is an apocalyptic number.

12655443322 is a deficient number, since it is larger than the sum of its proper divisors (6327721664).

12655443322 is an equidigital number, since it uses as much as digits as its factorization.

12655443322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6327721663.

The product of its digits is 172800, while the sum is 37.

Adding to 12655443322 its reverse (22334455621), we get a palindrome (34989898943).

The spelling of 12655443322 in words is "twelve billion, six hundred fifty-five million, four hundred forty-three thousand, three hundred twenty-two".