20132112221 has 8 divisors (see below), whose sum is σ = 22623377280. Its totient is φ = 17775510192.

The previous prime is 20132112199. The next prime is 20132112223. The reversal of 20132112221 is 12221123102.

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 20132112221 - 2³⁴ = 2952243037 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20132112221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20132112223) 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, 33665441 + ... + 33666038.

It is an arithmetic number, because the mean of its divisors is an integer number (2827922160).

Almost surely, 2^20132112221 is an apocalyptic number.

It is an amenable number.

20132112221 is a deficient number, since it is larger than the sum of its proper divisors (2491265059).

20132112221 is a wasteful number, since it uses less digits than its factorization.

20132112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67331515.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20132112221 its reverse (12221123102), we get a palindrome (32353235323).

The spelling of 20132112221 in words is "twenty billion, one hundred thirty-two million, one hundred twelve thousand, two hundred twenty-one".