20213121103321 has 8 divisors (see below), whose sum is σ = 20422765920960. Its totient is φ = 20003733995952.

The previous prime is 20213121103303. The next prime is 20213121103363. The reversal of 20213121103321 is 12330112131202.

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 20213121103321 - 2⁵ = 20213121103289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20213121103292 and 20213121103301.

It is not an unprimeable number, because it can be changed into a prime (20213121103421) 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, 64269886 + ... + 64583623.

It is an arithmetic number, because the mean of its divisors is an integer number (2552845740120).

Almost surely, 2^{20213121103321} is an apocalyptic number.

It is an amenable number.

20213121103321 is a deficient number, since it is larger than the sum of its proper divisors (209644817639).

20213121103321 is a wasteful number, since it uses less digits than its factorization.

20213121103321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128855135.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 20213121103321 its reverse (12330112131202), we get a palindrome (32543233234523).

The spelling of 20213121103321 in words is "twenty trillion, two hundred thirteen billion, one hundred twenty-one million, one hundred three thousand, three hundred twenty-one".