20321212312223 has 8 divisors (see below), whose sum is σ = 21845872139520. Its totient is φ = 18842064718680.

The previous prime is 20321212312213. The next prime is 20321212312241. The reversal of 20321212312223 is 32221321212302.

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 20321212312223 - 2¹² = 20321212308127 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20321212312192 and 20321212312201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20321212312213) 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, 11378057513 + ... + 11378059298.

It is an arithmetic number, because the mean of its divisors is an integer number (2730734017440).

Almost surely, 2^{20321212312223} is an apocalyptic number.

20321212312223 is a deficient number, since it is larger than the sum of its proper divisors (1524659827297).

20321212312223 is a wasteful number, since it uses less digits than its factorization.

20321212312223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22756116877.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 20321212312223 its reverse (32221321212302), we get a palindrome (52542533524525).

The spelling of 20321212312223 in words is "twenty trillion, three hundred twenty-one billion, two hundred twelve million, three hundred twelve thousand, two hundred twenty-three".