21214034433423 has 36 divisors (see below), whose sum is σ = 33189618577752. Its totient is φ = 13051370255040.

The previous prime is 21214034433413. The next prime is 21214034433451. The reversal of 21214034433423 is 32433443041212.

21214034433423 is a `hidden beast` number, since 2 + 1 + 214 + 0 + 3 + 4 + 433 + 4 + 2 + 3 = 666.

It is not a de Polignac number, because 21214034433423 - 2⁴ = 21214034433407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21214034433413) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3986640 + ... + 7636842.

It is an arithmetic number, because the mean of its divisors is an integer number (921933849382).

Almost surely, 2^{21214034433423} is an apocalyptic number.

21214034433423 is a deficient number, since it is larger than the sum of its proper divisors (11975584144329).

21214034433423 is a wasteful number, since it uses less digits than its factorization.

21214034433423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3654056 (or 3654040 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 36.

Adding to 21214034433423 its reverse (32433443041212), we get a palindrome (53647477474635).

The spelling of 21214034433423 in words is "twenty-one trillion, two hundred fourteen billion, thirty-four million, four hundred thirty-three thousand, four hundred twenty-three".