20132202221 has 4 divisors (see below), whose sum is σ = 20132767200. Its totient is φ = 20131637244.

The previous prime is 20132202173. The next prime is 20132202239. The reversal of 20132202221 is 12220223102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20132202221 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 20132202221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20132202521) 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, 225161 + ... + 301598.

It is an arithmetic number, because the mean of its divisors is an integer number (5033191800).

Almost surely, 2^20132202221 is an apocalyptic number.

It is an amenable number.

20132202221 is a deficient number, since it is larger than the sum of its proper divisors (564979).

20132202221 is an equidigital number, since it uses as much as digits as its factorization.

20132202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564978.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20132202221 its reverse (12220223102), we get a palindrome (32352425323).

The spelling of 20132202221 in words is "twenty billion, one hundred thirty-two million, two hundred two thousand, two hundred twenty-one".