20130022213221 has 4 divisors (see below), whose sum is σ = 26840029617632. Its totient is φ = 13420014808812.

The previous prime is 20130022213199. The next prime is 20130022213297. The reversal of 20130022213221 is 12231222003102.

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 not a de Polignac number, because 20130022213221 - 2¹⁵ = 20130022180453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20130022253221) 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, 3355003702201 + ... + 3355003702206.

It is an arithmetic number, because the mean of its divisors is an integer number (6710007404408).

Almost surely, 2^{20130022213221} is an apocalyptic number.

It is an amenable number.

20130022213221 is a deficient number, since it is larger than the sum of its proper divisors (6710007404411).

20130022213221 is an equidigital number, since it uses as much as digits as its factorization.

20130022213221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6710007404410.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 20130022213221 its reverse (12231222003102), we get a palindrome (32361244216323).

The spelling of 20130022213221 in words is "twenty trillion, one hundred thirty billion, twenty-two million, two hundred thirteen thousand, two hundred twenty-one".