12221109983 has 4 divisors (see below), whose sum is σ = 12222406320. Its totient is φ = 12219813648.

The previous prime is 12221109977. The next prime is 12221110021. The reversal of 12221109983 is 38990112221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12221109983 - 2¹⁶ = 12221044447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221109913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 633923 + ... + 652916.

It is an arithmetic number, because the mean of its divisors is an integer number (3055601580).

Almost surely, 2^12221109983 is an apocalyptic number.

12221109983 is a deficient number, since it is larger than the sum of its proper divisors (1296337).

12221109983 is an equidigital number, since it uses as much as digits as its factorization.

12221109983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296336.

The product of its (nonzero) digits is 15552, while the sum is 38.

The spelling of 12221109983 in words is "twelve billion, two hundred twenty-one million, one hundred nine thousand, nine hundred eighty-three".