21122200222123 has 48 divisors (see below), whose sum is σ = 28517614949376. Its totient is φ = 15191771512320.

The previous prime is 21122200222091. The next prime is 21122200222213. The reversal of 21122200222123 is 32122200222112.

It is a happy number.

It is not a de Polignac number, because 21122200222123 - 2⁵ = 21122200222091 is a prime.

It is a super-2 number, since 2×21122200222123² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21122200222094 and 21122200222103.

It is not an unprimeable number, because it can be changed into a prime (21122200522123) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 231676915 + ... + 231768067.

It is an arithmetic number, because the mean of its divisors is an integer number (594116978112).

Almost surely, 2^{21122200222123} is an apocalyptic number.

21122200222123 is a deficient number, since it is larger than the sum of its proper divisors (7395414727253).

21122200222123 is a wasteful number, since it uses less digits than its factorization.

21122200222123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109004 (or 108991 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21122200222123 its reverse (32122200222112), we get a palindrome (53244400444235).

The spelling of 21122200222123 in words is "twenty-one trillion, one hundred twenty-two billion, two hundred million, two hundred twenty-two thousand, one hundred twenty-three".