20132211221 has 8 divisors (see below), whose sum is σ = 20596040640. Its totient is φ = 19672468768.

The previous prime is 20132211157. The next prime is 20132211227. The reversal of 20132211221 is 12211223102.

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 20132211221 - 2⁶ = 20132211157 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 20132211221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20132211227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1011776 + ... + 1031481.

It is an arithmetic number, because the mean of its divisors is an integer number (2574505080).

Almost surely, 2^20132211221 is an apocalyptic number.

It is an amenable number.

20132211221 is a deficient number, since it is larger than the sum of its proper divisors (463829419).

20132211221 is a wasteful number, since it uses less digits than its factorization.

20132211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2043483.

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

Adding to 20132211221 its reverse (12211223102), we get a palindrome (32343434323).

The spelling of 20132211221 in words is "twenty billion, one hundred thirty-two million, two hundred eleven thousand, two hundred twenty-one".