21330021022223 has 4 divisors (see below), whose sum is σ = 21371926761480. Its totient is φ = 21288115282968.

The previous prime is 21330021022151. The next prime is 21330021022249. The reversal of 21330021022223 is 32222012003312.

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 21330021022223 - 2⁴² = 16931974511119 is a prime.

It is a super-2 number, since 2×21330021022223² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21330021022273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20952868865 + ... + 20952869882.

It is an arithmetic number, because the mean of its divisors is an integer number (5342981690370).

Almost surely, 2^{21330021022223} is an apocalyptic number.

21330021022223 is a deficient number, since it is larger than the sum of its proper divisors (41905739257).

21330021022223 is an equidigital number, since it uses as much as digits as its factorization.

21330021022223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41905739256.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21330021022223 its reverse (32222012003312), we get a palindrome (53552033025535).

The spelling of 21330021022223 in words is "twenty-one trillion, three hundred thirty billion, twenty-one million, twenty-two thousand, two hundred twenty-three".