21122133123222 has 16 divisors (see below), whose sum is σ = 46938073607280. Its totient is φ = 7040711041056.

The previous prime is 21122133123181. The next prime is 21122133123229. The reversal of 21122133123222 is 22232133122112.

21122133123222 is a `hidden beast` number, since 2 + 1 + 1 + 2 + 2 + 1 + 331 + 2 + 322 + 2 = 666.

It is a super-2 number, since 2×21122133123222² (a number of 27 digits) contains 22 as substring.

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122133123229) 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, 195575306643 + ... + 195575306750.

It is an arithmetic number, because the mean of its divisors is an integer number (2933629600455).

Almost surely, 2^{21122133123222} is an apocalyptic number.

21122133123222 is an abundant number, since it is smaller than the sum of its proper divisors (25815940484058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21122133123222 is a wasteful number, since it uses less digits than its factorization.

21122133123222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391150613404 (or 391150613398 counting only the distinct ones).

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

Adding to 21122133123222 its reverse (22232133122112), we get a palindrome (43354266245334).

The spelling of 21122133123222 in words is "twenty-one trillion, one hundred twenty-two billion, one hundred thirty-three million, one hundred twenty-three thousand, two hundred twenty-two".