20101321102223 has 4 divisors (see below), whose sum is σ = 20102356045248. Its totient is φ = 20100286159200.

The previous prime is 20101321102193. The next prime is 20101321102267. The reversal of 20101321102223 is 32220112310102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20101321102223 - 2³⁰ = 20100247360399 is a prime.

It is a super-2 number, since 2×20101321102223² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20101321102195 and 20101321102204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101321102273) 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 3 ways as a sum of consecutive naturals, for example, 517442378 + ... + 517481223.

It is an arithmetic number, because the mean of its divisors is an integer number (5025589011312).

Almost surely, 2^{20101321102223} is an apocalyptic number.

20101321102223 is a deficient number, since it is larger than the sum of its proper divisors (1034943025).

20101321102223 is a wasteful number, since it uses less digits than its factorization.

20101321102223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034943024.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 20101321102223 its reverse (32220112310102), we get a palindrome (52321433412325).

The spelling of 20101321102223 in words is "twenty trillion, one hundred one billion, three hundred twenty-one million, one hundred two thousand, two hundred twenty-three".