12112013221993 has 4 divisors (see below), whose sum is σ = 12112070709060. Its totient is φ = 12111955734928.

The previous prime is 12112013221969. The next prime is 12112013222009. The reversal of 12112013221993 is 39912231021121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8951184373609 + 3160828848384 = 2991853^2 + 1777872^2 .

It is a cyclic number.

It is not a de Polignac number, because 12112013221993 - 2¹⁷ = 12112013090921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12112013221963) 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, 28426330 + ... + 28849267.

It is an arithmetic number, because the mean of its divisors is an integer number (3028017677265).

Almost surely, 2^{12112013221993} is an apocalyptic number.

It is an amenable number.

12112013221993 is a deficient number, since it is larger than the sum of its proper divisors (57487067).

12112013221993 is an equidigital number, since it uses as much as digits as its factorization.

12112013221993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57487066.

The product of its (nonzero) digits is 11664, while the sum is 37.

The spelling of 12112013221993 in words is "twelve trillion, one hundred twelve billion, thirteen million, two hundred twenty-one thousand, nine hundred ninety-three".