22211323212123 has 32 divisors (see below), whose sum is σ = 33091316294400. Its totient is φ = 14724014398848.

The previous prime is 22211323212121. The next prime is 22211323212149. The reversal of 22211323212123 is 32121232311222.

22211323212123 is a `hidden beast` number, since 2 + 2 + 2 + 1 + 1 + 323 + 212 + 123 = 666.

It is not a de Polignac number, because 22211323212123 - 2¹ = 22211323212121 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (22211323212121) 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 31 ways as a sum of consecutive naturals, for example, 95078940 + ... + 95312262.

It is an arithmetic number, because the mean of its divisors is an integer number (1034103634200).

Almost surely, 2^{22211323212123} is an apocalyptic number.

22211323212123 is a deficient number, since it is larger than the sum of its proper divisors (10879993082277).

22211323212123 is a wasteful number, since it uses less digits than its factorization.

22211323212123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253208 (or 253202 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

Adding to 22211323212123 its reverse (32121232311222), we get a palindrome (54332555523345).

Subtracting 22211323212123 from its reverse (32121232311222), we obtain a palindrome (9909909099099).

The spelling of 22211323212123 in words is "twenty-two trillion, two hundred eleven billion, three hundred twenty-three million, two hundred twelve thousand, one hundred twenty-three".