12221146641 has 8 divisors (see below), whose sum is σ = 17776213344. Its totient is φ = 7406755520.

The previous prime is 12221146633. The next prime is 12221146667. The reversal of 12221146641 is 14664112221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12221146641 - 2³ = 12221146633 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12221146599 and 12221146608.

It is not an unprimeable number, because it can be changed into a prime (12221146601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185168856 + ... + 185168921.

It is an arithmetic number, because the mean of its divisors is an integer number (2222026668).

Almost surely, 2^12221146641 is an apocalyptic number.

12221146641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12221146641 is a deficient number, since it is larger than the sum of its proper divisors (5555066703).

12221146641 is a wasteful number, since it uses less digits than its factorization.

12221146641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370337791.

The product of its digits is 4608, while the sum is 30.

Adding to 12221146641 its reverse (14664112221), we get a palindrome (26885258862).

The spelling of 12221146641 in words is "twelve billion, two hundred twenty-one million, one hundred forty-six thousand, six hundred forty-one".