20132210222221 has 4 divisors (see below), whose sum is σ = 20415762478944. Its totient is φ = 19848657965500.

The previous prime is 20132210222143. The next prime is 20132210222317. The reversal of 20132210222221 is 12222201223102.

It is a happy number.

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 not a de Polignac number, because 20132210222221 - 2⁹ = 20132210221709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20132210222192 and 20132210222201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20132210222921) 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, 141776128255 + ... + 141776128396.

It is an arithmetic number, because the mean of its divisors is an integer number (5103940619736).

Almost surely, 2^{20132210222221} is an apocalyptic number.

It is an amenable number.

20132210222221 is a deficient number, since it is larger than the sum of its proper divisors (283552256723).

20132210222221 is an equidigital number, since it uses as much as digits as its factorization.

20132210222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283552256722.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 20132210222221 its reverse (12222201223102), we get a palindrome (32354411445323).

The spelling of 20132210222221 in words is "twenty trillion, one hundred thirty-two billion, two hundred ten million, two hundred twenty-two thousand, two hundred twenty-one".