21223223201123 has 8 divisors (see below), whose sum is σ = 21350435188992. Its totient is φ = 21096012723336.

The previous prime is 21223223201101. The next prime is 21223223201161. The reversal of 21223223201123 is 32110232232212.

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 21223223201123 - 2⁴² = 16825176690019 is a prime.

It is a super-2 number, since 2×21223223201123² (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 = 21223223201092 and 21223223201101.

It is not an unprimeable number, because it can be changed into a prime (21223223251123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42074936 + ... + 42576362.

It is an arithmetic number, because the mean of its divisors is an integer number (2668804398624).

Almost surely, 2^{21223223201123} is an apocalyptic number.

21223223201123 is a deficient number, since it is larger than the sum of its proper divisors (127211987869).

21223223201123 is a wasteful number, since it uses less digits than its factorization.

21223223201123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755041.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 21223223201123 its reverse (32110232232212), we get a palindrome (53333455433335).

The spelling of 21223223201123 in words is "twenty-one trillion, two hundred twenty-three billion, two hundred twenty-three million, two hundred one thousand, one hundred twenty-three".