21322213220223 has 16 divisors (see below), whose sum is σ = 32442206302560. Its totient is φ = 13830624790848.

The previous prime is 21322213220171. The next prime is 21322213220237. The reversal of 21322213220223 is 32202231222312.

21322213220223 is a `hidden beast` number, since 2 + 1 + 3 + 2 + 2 + 213 + 220 + 223 = 666.

It is not a de Polignac number, because 21322213220223 - 2⁹ = 21322213219711 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21322213220263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10671777390 + ... + 10671779387.

It is an arithmetic number, because the mean of its divisors is an integer number (2027637893910).

Almost surely, 2^{21322213220223} is an apocalyptic number.

21322213220223 is a deficient number, since it is larger than the sum of its proper divisors (11119993082337).

21322213220223 is a wasteful number, since it uses less digits than its factorization.

21322213220223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21343556823 (or 21343556817 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 21322213220223 its reverse (32202231222312), we get a palindrome (53524444442535).

The spelling of 21322213220223 in words is "twenty-one trillion, three hundred twenty-two billion, two hundred thirteen million, two hundred twenty thousand, two hundred twenty-three".