21122344143423 has 40 divisors (see below), whose sum is σ = 32288803536000. Its totient is φ = 13753284369552.

The previous prime is 21122344143323. The next prime is 21122344143449. The reversal of 21122344143423 is 32434144322112.

21122344143423 is a `hidden beast` number, since 2 + 1 + 1 + 2 + 234 + 414 + 3 + 4 + 2 + 3 = 666.

It is not a de Polignac number, because 21122344143423 - 2¹² = 21122344139327 is a prime.

It is a super-2 number, since 2×21122344143423² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122344143323) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 62941128 + ... + 63275826.

It is an arithmetic number, because the mean of its divisors is an integer number (807220088400).

Almost surely, 2^{21122344143423} is an apocalyptic number.

21122344143423 is a deficient number, since it is larger than the sum of its proper divisors (11166459392577).

21122344143423 is a wasteful number, since it uses less digits than its factorization.

21122344143423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352873 (or 352864 counting only the distinct ones).

The product of its digits is 110592, while the sum is 36.

Adding to 21122344143423 its reverse (32434144322112), we get a palindrome (53556488465535).

The spelling of 21122344143423 in words is "twenty-one trillion, one hundred twenty-two billion, three hundred forty-four million, one hundred forty-three thousand, four hundred twenty-three".