20132041221 has 12 divisors (see below), whose sum is σ = 29108448460. Its totient is φ = 13408053120.

The previous prime is 20132041217. The next prime is 20132041253. The reversal of 20132041221 is 12214023102.

It is a happy number.

20132041221 is a `hidden beast` number, since 201 + 32 + 0 + 412 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11127929121 + 9004112100 = 105489^2 + 94890^2 .

It is not a de Polignac number, because 20132041221 - 2² = 20132041217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20132041194 and 20132041203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20132041211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1099390 + ... + 1117551.

Almost surely, 2^20132041221 is an apocalyptic number.

It is an amenable number.

20132041221 is a deficient number, since it is larger than the sum of its proper divisors (8976407239).

20132041221 is a wasteful number, since it uses less digits than its factorization.

20132041221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2217956 (or 2217953 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 20132041221 its reverse (12214023102), we get a palindrome (32346064323).

The spelling of 20132041221 in words is "twenty billion, one hundred thirty-two million, forty-one thousand, two hundred twenty-one".