20313322211221 has 8 divisors (see below), whose sum is σ = 22827010913280. Its totient is φ = 17935508574192.

The previous prime is 20313322211219. The next prime is 20313322211263. The reversal of 20313322211221 is 12211222331302.

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 20313322211221 - 2¹ = 20313322211219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20313322221221) 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, 33968765941 + ... + 33968766538.

It is an arithmetic number, because the mean of its divisors is an integer number (2853376364160).

Almost surely, 2^{20313322211221} is an apocalyptic number.

It is an amenable number.

20313322211221 is a deficient number, since it is larger than the sum of its proper divisors (2513688702059).

20313322211221 is a wasteful number, since it uses less digits than its factorization.

20313322211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67937532515.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 20313322211221 its reverse (12211222331302), we get a palindrome (32524544542523).

The spelling of 20313322211221 in words is "twenty trillion, three hundred thirteen billion, three hundred twenty-two million, two hundred eleven thousand, two hundred twenty-one".