12211621613 has 8 divisors (see below), whose sum is σ = 12866973600. Its totient is φ = 11557533168.

The previous prime is 12211621607. The next prime is 12211621621. The reversal of 12211621613 is 31612611221.

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 12211621613 - 2¹⁴ = 12211605229 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211621013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296006 + ... + 334727.

It is an arithmetic number, because the mean of its divisors is an integer number (1608371700).

Almost surely, 2^12211621613 is an apocalyptic number.

It is an amenable number.

12211621613 is a deficient number, since it is larger than the sum of its proper divisors (655351987).

12211621613 is a wasteful number, since it uses less digits than its factorization.

12211621613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631771.

The product of its digits is 864, while the sum is 26.

The spelling of 12211621613 in words is "twelve billion, two hundred eleven million, six hundred twenty-one thousand, six hundred thirteen".