21001230022223 has 8 divisors (see below), whose sum is σ = 22911005806416. Its totient is φ = 19091549747200.

The previous prime is 21001230022177. The next prime is 21001230022229. The reversal of 21001230022223 is 32222003210012.

It is a happy number.

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 21001230022223 - 2⁶ = 21001230022159 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21001230022195 and 21001230022204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21001230022229) 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, 23417138 + ... + 24297423.

It is an arithmetic number, because the mean of its divisors is an integer number (2863875725802).

Almost surely, 2^{21001230022223} is an apocalyptic number.

21001230022223 is a deficient number, since it is larger than the sum of its proper divisors (1909775784193).

21001230022223 is a wasteful number, since it uses less digits than its factorization.

21001230022223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47754585.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21001230022223 its reverse (32222003210012), we get a palindrome (53223233232235).

The spelling of 21001230022223 in words is "twenty-one trillion, one billion, two hundred thirty million, twenty-two thousand, two hundred twenty-three".