20210123312221 has 8 divisors (see below), whose sum is σ = 20834211173760. Its totient is φ = 19595420230752.

The previous prime is 20210123312213. The next prime is 20210123312251. The reversal of 20210123312221 is 12221332101202.

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 20210123312221 - 2³ = 20210123312213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20210123312192 and 20210123312201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210123312251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2346190645 + ... + 2346199258.

It is an arithmetic number, because the mean of its divisors is an integer number (2604276396720).

Almost surely, 2^{20210123312221} is an apocalyptic number.

It is an amenable number.

20210123312221 is a deficient number, since it is larger than the sum of its proper divisors (624087861539).

20210123312221 is an equidigital number, since it uses as much as digits as its factorization.

20210123312221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4692390035.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 20210123312221 its reverse (12221332101202), we get a palindrome (32431455413423).

The spelling of 20210123312221 in words is "twenty trillion, two hundred ten billion, one hundred twenty-three million, three hundred twelve thousand, two hundred twenty-one".