20211322023221 has 8 divisors (see below), whose sum is σ = 23098886426304. Its totient is φ = 17323815791520.

The previous prime is 20211322023161. The next prime is 20211322023227. The reversal of 20211322023221 is 12232022311202.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20211322023221 - 2³⁴ = 20194142154037 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 (20211322023227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13795760 + ... + 15190313.

It is an arithmetic number, because the mean of its divisors is an integer number (2887360803288).

Almost surely, 2^{20211322023221} is an apocalyptic number.

It is an amenable number.

20211322023221 is a deficient number, since it is larger than the sum of its proper divisors (2887564403083).

20211322023221 is an equidigital number, since it uses as much as digits as its factorization.

20211322023221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29085691.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 20211322023221 its reverse (12232022311202), we get a palindrome (32443344334423).

The spelling of 20211322023221 in words is "twenty trillion, two hundred eleven billion, three hundred twenty-two million, twenty-three thousand, two hundred twenty-one".