20211000221223 has 32 divisors (see below), whose sum is σ = 34282935736320. Its totient is φ = 11527795156320.

The previous prime is 20211000221213. The next prime is 20211000221267. The reversal of 20211000221223 is 32212200011202.

It is not a de Polignac number, because 20211000221223 - 2⁴ = 20211000221207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20211000221196 and 20211000221205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211000221213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98730015 + ... + 98934512.

It is an arithmetic number, because the mean of its divisors is an integer number (1071341741760).

Almost surely, 2^{20211000221223} is an apocalyptic number.

20211000221223 is a deficient number, since it is larger than the sum of its proper divisors (14071935515097).

20211000221223 is a wasteful number, since it uses less digits than its factorization.

20211000221223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197665084 (or 197665078 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 20211000221223 its reverse (32212200011202), we get a palindrome (52423200232425).

The spelling of 20211000221223 in words is "twenty trillion, two hundred eleven billion, two hundred twenty-one thousand, two hundred twenty-three".