21250134043422 has 16 divisors (see below), whose sum is σ = 42501154989312. Its totient is φ = 7083230197400.

The previous prime is 21250134043421. The next prime is 21250134043429. The reversal of 21250134043422 is 22434043105212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21250134043421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36642588 + ... + 37217999.

It is an arithmetic number, because the mean of its divisors is an integer number (2656322186832).

Almost surely, 2^{21250134043422} is an apocalyptic number.

21250134043422 is an abundant number, since it is smaller than the sum of its proper divisors (21251020945890).

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

21250134043422 is a wasteful number, since it uses less digits than its factorization.

21250134043422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73908543.

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 21250134043422 its reverse (22434043105212), we get a palindrome (43684177148634).

The spelling of 21250134043422 in words is "twenty-one trillion, two hundred fifty billion, one hundred thirty-four million, forty-three thousand, four hundred twenty-two".